TY  - BOOK
AU  - Gurdev singh
TI  - Information sources, services and systems
SN  - 9788120346390(pbk.)
U1  - 025.52 22
PY  - 2013///
CY  - Delhi
PB  - PHI Learning
KW  - Information services
KW  - Information resources
KW  - Information resources management
N1  - Includes bibliographical references and index
ER  -