TY  - BOOK
AU  - Townley,Helen M.
TI  - Systems analysis for information retrieval
T2  - Institute of Information Scientists
SN  - 0233969209
PY  - 1978///
CY  - London
PB  - Deutsch in association with the Institute of Information Scientists
KW  - Information storage and retrieval systems
KW  - System analysis
N1  - A Grafton book; Includes bibliographical references : p.110-115 and index
ER  -