TY  - BOOK
AU  - Stephen,Peter
AU  - Hornby,Susan .
TI  - Simple statistics: library and information professionals 
SN  - 1-85604-129-8
U1  - 025.21  
PY  - 1995///
CY  - London
PB  - Library Association Publishing
KW  - Library statistics.
KW  - Bibliothèque
ER  -