TY  - BOOK
AU  - Das,Nandita
TI  - Isaac Newton
T2  - Great scientists
SN  - 9788171810819
U1  - 509.2 
PY  - 1993///
CY  - New Delhi
PB  - Learner's Press Private
KW  - Scientists
KW  - Newton, Isaac
N1  - Primary
ER  -