TY  - BOOK
AU  - Maheshwari, P., ed.
AU  - Lal, Manorhar, ed.
TI  - Biology : a textbook for higher secondary schools : section 6 : evolution, heredity and adaptation and section 7 : general
PY  - 1967///
CY  - New Delhi
PB  - National Council of Educational Research and Training
ER  -