TY  - BOOK
AU  - Vickery,B.C.
TI  - Faceted Classification: a Guide to Construction and Use of Special Schemes
PY  - 1960///
CY  - London : 
PB  - Aslib, 
N1  - Bibliografía, pp. 68-69    Prepared by B. C. Vickery for the classification research group
ER  -