TY  - BOOK
AU  - Rao, Indumati
AU  - Rao, C.N.R 
TI  - Vigyan Seekhna (Part.1): Vishwa, Saur mandal, Prithvi 
SN  - 9788123756233
U1  - 500 
PY  - 2019///
CY  - New Delhi
PB  - National Book Trust, 
KW  - 1. Science--Study and teaching
ER  -