TY  - BOOK
AU  - Gopalkrishnan,K.V.
TI  - Inventors who revolutionised our lives 
SN  - 9788123747668
AV  - 954.054 
U1  - 954.054 22
PY  - 2017///
CY  - New delhi 
PB  - National book trust 
UR  - http://sgvu.bestbookbuddies.com/cgi-bin/koha/opac-detail.pl?biblionumber=70700
ER  -