TY  - BOOK
AU  - Stolburg
AU  - Mehra, Naveen
AU  - Ghosla, D.N.
TI  - हमारा विश्व | Humara vishwa
U1  - 500 
PY  - 1998///
CY  - Delhi
PB  - Vigyan lok
KW  - Natural sciences & mathematics
ER  -