TY  - BOOK
AU  - Rajiv, Rajendra Kumar
AU  - Prabhakar, Vishnu (Ed)
TI  - Balgyan-vigyan encyclopaedia: khoj aur khojkarta
U1  - 609 21st
PY  - 1990///
CY  - New Delhi
PB  - Pustkayan
KW  - Science; Encyclopedias and dictionaries; Inventors; 'Discoverers
ER  -