TY  - BOOK
AU  - Vyas,Haris Chndra
AU  - Vyas,Kalish Chandra
TI  - Manv Aur Prayavarn
U1  - 574.52 
PY  - 1993///
CY  - New Delhi
PB  - Vidhya Vihar
KW  - Environment
ER  -