TY  - BOOK
AU  - Helfand, Lewis
TI  - They changed the world
SN  - 9789380741888
U1  - B 
PY  - 2014///
CY  - New Delhi
PB  - Kalyani Navyug
KW  - Bell, Alexander Graham, 1847-1922 -- Comic books, strips, etc. -- Juvenile literature
KW  - Edison, Thomas A. (Thomas Alva), 1847-1931 -- Comic books, strips, etc. -- Juvenile literature
KW  - Tesla, Nikola, 1856-1943 -- Comic books, strips, etc. -- Juvenile literature
KW  - Graphic novels
ER  -