TY  - BOOK
AU  - Rajeev, Rajendra Kumar
AU  - Avasthi, Rajendra (Ed)
AU  - Prabhakar, Vishnu (Ed)
ED  - Bal Gyan vigyan encyclopedia
TI  - Bal gyan-vigyan encyclopaedia: manav jagat
U1  - 573.03 21st
PY  - 1991///
CY  - New Delhi
PB  - Pustakayan
KW  - Science; Encyclopedias and dictionaries; Man-Origin; Manners and customs
ER  -