TY  - BOOK
AU  - Sayers,W.C.Berwick
TI  - An introduction to library classification: theoretical, historical and practical with readings, exercises and examination papers 
U1  - 025.431 22
PY  - 1958///
CY  - London
PB  - Grafton
KW  - CLASIFICACION
KW  - BIBLIOTECAS
ER  -