TY  - BOOK
AU  - Sawhney,C.L.
TI  - Essentials of biology: for school certificate, higher secondary and pre-university examination 
U1  - 574 
PY  - 1968///
CY  - Delhi
PB  - S. Chand
KW  - Biology
KW  - Invertebrate
KW  - Vertebrate
KW  - Heredity
N1  - Includes index
ER  -