TY  - GEN
AU  - Sayers,William Charles Berwick
TI  - An introduction to library classification: theoritical, historical and practical with readings, exercises and examination papers
PY  - 1954///
CY  - London
PB  - Grafton
KW  - Classificação
KW  - Br
KW  - Livros
KW  - Bibliotecas
ER  -