TY  - BOOK
AU  - Agarwal,Preeti
TI  - National science olympiad: exploring the world of science : class 9 
SN  - 9789357940481 (pbk.)
U1  - 507 22
PY  - 2018///
CY  - New Delhi
PB  - V & S publishers
KW  - Science
KW  - Study and teaching
KW  - Problems, exercises, etc
N1  - 1 CD-ROM includes; Includes bibliographical references and index
ER  -