TY  - BOOK
AU  - Kumar, H. D.
TI  - Modern concept of ecology
SN  - 0-7069-2248-4
U1  - 577 
PY  - 1983///
CY  - New Delhi
PB  - Vikas
KW  - Air pollutions
KW  - Ecology
KW  - Ecosystem
N1  - Includes bibliographical references and index
ER  -