TY  - BOOK
TI  - World's greatest scientists & inventors
SN  - 9789388369060
U1  - 509.22 
PY  - 2019///
CY  - New Delhi
PB  - Wonder House
KW  - Scientists & Inventors
KW  - Eli Whitney
KW  - James Watt
KW  - Alexander Graham Bell
ER  -