TY  - BOOK
AU  - Tiwari, Vijay Kumar
TI  - A Text book of environmental studies: as per unified UGC syllabus
SN  - 9789351425540
U1  - 363.7  
PY  - 2010/// (2020 reprint)
CY  - Mumbai
PB  - Himalaya Publishing House
KW  - Environmental sciences
ER  -