TY  - BOOK
AU  - Kumar, Mahendra
TI  - Mahan bhartiya vaigyanik
SN  - 9788193391471
U1  - 509.0922 23rd ed.
PY  - 2021///
CY  - New Delhi
PB  - Alina Books
KW  - SCIENCE; SCIENTISTS-INDIA
ER  -