1 - LIBRARY SCIENCE
1A - Manuals of library science
1B - Bibliographies and libraries of library science
1C - Continuing resources of library science
1D - Conferences of library science
1S - History of library science

2 - LIBRARY PROFESSION AND EDUCATION
2A - Library education and training
2B - Recruitment of librarians and library staff
2C - Library profession
2D - Library associations
2S - Bio-bibliography of librarians

3 - BIBLIOGRAPHY
3A - Manuals of bibliography
3B - Bibliographic control
3C - Bibliographic searching
3D - Bibliographies and reference books
3E - Bibliographic references
3S - History of bibliography

4 - DOCUMENTATION AND INFORMATION SCIENCE

5 - ARCHIVE SCIENCE

6 - LIBRARY ORGANIZATION
6A - Library management and evaluation
6B - Co-operation and library systems

7 - LIBRARY POLICY
7A - Library and cultural heritage policy in Italy
7B - Central administration of libraries and cultural heritage in Italy
7C - Library and cultural policy of Italian Regions
7D - Library and cultural policy of Italian local government
7E - European library and cultural policy
7F - Library and cultural policy in other countries

8 - LAW AND LEGISLATION
8A - European legislation
8B - Italian state legislation
8C - Italian regional legislation
8D - Legislation of other countries
8E - International agreements and conventions

9 - STANDARDIZATION

10 - LIBRARIES
10A - National and state libraries
10B - Public libraries
10Ba - Public libraries in Italy
10Bb - Public libraries in Italian regions or provinces
10Bc - Public libraries in Italian cities
10Bd - Public libraries in other countries
10C - Children libraries
10D - School libraries
10E - Academic libraries
10F - Research and historical libraries
10G - Religious libraries
10H - Special libraries
10I - Company libraries
10K - Music libraries
10L - Art, archaeology and architecture libraries
10M - Biomedical libraries
10N - Parliamentary and government libraries
10S - Library history
10Z - Libraries in fiction and arts

11 - LIBRARY BUILDING AND FURNITURE

12 - COLLECTION DEVELOPMENT AND MANAGEMENT

13 - SPECIAL MATERIALS AND SERVICES
13A - Local studies collections
13C - Serials
13D - Grey literature and ephemera
13E - Audiovisual and graphic materials
13G - Cartographic material
13H - Electronic resources
13L - Rare and antiquarian books
13M - Manuscripts

14 - PRESERVATION AND CONSERVATION
14A - Restoration

15 - CATALOGUING
15A - Bibliographic description
15B - Author cataloguing
15C - Serials cataloguing
15D - Cataloguing of grey literature
15E - Cataloguing of non-book materials
15F - Cataloguing of music
15G - Cataloguing of cartographic material
15H - Cataloguing of electronic resources
15L - Cataloguing of antiquarian and rare books
15M - Cataloguing of manuscripts
15N - Archival description
15R - Cataloguing of children books
15S - History of cataloguing

16 - INDEXING
16A - Subject headings
16B - Thesauri
16C - Classification

17 - PUBLIC SERVICES
17A - Reference and information services
17B - Loan services
17C - Interlending and document delivery
17D - Reproduction services
17E - Access to electronic information
17F - Multicultural services and special users

18 - INFORMATION AND COMMUNICATION
18A - Scientific information and communication
18B - Information search and retrieval
18C - Online information and databases
18D - Databases in special fields
18E - Networked information and Internet resources
18F - Internet resources in special fields

19 - INFORMATION TECHNOLOGY
19A - Computer science
19B - Telematics and networking
19C - Library automation
19D - Library automation systems
19E - Computer applications in bibliography
19F - Computer applications in archives
19G - Computer applications in publishing and bookselling
19H - Text processing
19I - Reprography, digitisation and image processing
19K - Communication technology

20 - HISTORY OF THE BOOK
20A - Manuscripts and writing
20B - History of the book, 15th century
20C - History of the book, 16th century
20D - History of the book, 17th century
20E - History of the book, 18th century
20F - Paper and writing materials
20G - Printing
20H - Decoration and illustration
20I - Engraving and prints
20K - Illumination
20L - Artist's books
20M - Bookbinding
20N - Bookplates
20P - Private libraries
20Q - Rare books trade and collecting

21 - PUBLISHING
21A - Publishing statistics
21B - Publishing directories
21C - Book magazines
21D - Conferences on publishing
21E - Book fairs
21F - Education and training for publishing
21G - Publishing associations
21H - Newspapers and journals publishing
21I - Electronic and multimedia publishing
21K - Publishing in special fields
21L - School books publishing
21M - Book trade and bookshops
21N - Text editing and style
21S - Publishing history
21T - Publishing history, 19th century
21U - Publishers and printers, 19th century
21V - Publishing history, 20th century
21X - Publishers and printers, 20th century
21Y - History of the press

22 - READING AND BOOKS

23 - CHILDREN BOOKS AND READING
23A - Youth and children literature
23B - Bibliographies and catalogues of children books
23C - Journals on children books
23D - Children book publishing
23E - Children book fairs
23F - Genres and themes in children books
23G - Nonfiction for children
23H - Youth and children magazines
23I - Non book materials and electronic resources for children
23K - Illustration for children
23L - Publishing firms and series for children
23M - Children bookshops and book trade
23N - Youth and children reading
23P - Reading activities for children

A - BIBLIOGRAPHIES AND REFERENCE WORKS
AA - Bibliographies of catalogues and reference works
AC - Bibliographies and directories of serials
AD - Bibliographies of grey literature and ephemera
AE - Bibliographies of non-book materials
AF - Music bibliographies and reference works
AH - Bibliographies and directories of electronic resources
AL - Bibliographies of antiquarian and rare books
AP - Personal bibliographies
AR - Regional and local bibliographies
AS - Special bibliographies
AZ - Special reference works

B - LIBRARY AND EXHIBITION CATALOGUES
BA - Catalogues of reference works
BB - Catalogues of local studies collections
BC - Catalogues of serials
BD - Catalogues of grey literature and ephemera
BE - Catalogues of non-book materials
BF - Catalogues of music
BG - Catalogues of cartographic material
BH - Catalogues of electronic resources
BK - Catalogues of prints and drawings
BL - Catalogues of antiquarian and rare books
BM - Catalogues of manuscripts
BN - Catalogues of papers and archival material
BP - Catalogues of incunabula
BQ - Catalogues of 16th-century books
BR - Catalogues of 17th-century books
BS - Catalogues of 18th-century books
BT - Special catalogues

Alberto Petrucciani - Vittorio Ponzani