TY  - BOOK
AU  - Sharma P D
AU  - Sharma P D
TI  - Ecology and environment
SN  - 8171330379 (pbk)
U1  - G:5, N0 
PY  - 1990///
CY  - Meerut
PB  - Rastogi publications      
KW  -  Environment
KW  -  Environmental monitoring
KW  -  System ecology
KW  - Ecology
N1  - Glossary 506-511p.; Selected readings 513-514p.; Index 515-519p
ER  -