TY  - BOOK
AU  - Mullay, Marilyn
TI  - Walford's guide to reference material
SN  - 1856040151
U1  - RR a47,7 N3.1 
PY  - 1993///
CY  - London
PB  - Library Association Publishing
KW  - Science and technology
N1  - Includes index
ER  -