TY  - BOOK
AU  - Kalra, R.M.
AU  - Gupta, Vandana
TI  - Teaching of science: a modern approach 
SN  - 9788120345447
U1  - 372.35044 
PY  - 2012///
CY  - New Delhi
PB  - PHI Learning
N1  - Includes bibliographical references and index
ER  -