TY  - GEN
AU  - Purang, Y.P.
AU  - Saxena, S.P. 
AU  -  Purang , Aditi
TI  - Experimental biology for class XII: core experiments,investigatory experiments, and activities 
U1  - 574.0724 
PY  - 1990///
CY  - New Delhi
PB  - Frank Bros 
KW  - BIOLOGY-RESEARCH
KW  - BIOLOGY-EXPERIMENTAL
ER  -