TY  - GEN
AU  - Verma, P. S.
AU  - Agarwal, V. K.
TI  - Science for tenth class biology
SN  - 8121912776
U1  - 570 
PY  - 1981///
CY  - New Dilhi
PB  - S.Chand  & Company Ltd
KW  - Life sciences
ER  -