Concepts in environment /
Concepts in environment /
P. R. Trivedi and Gurdeep Raj
- New Delhi : Akashdeep Pub. House, c1992 [reprinted 1997]
- 199 p. : ill. ; 22 cm.
8171582303
Environmental sciences
333.7 / Con 1997
8171582303
Environmental sciences
333.7 / Con 1997