TY  - BOOK
AU  - Zaheed, Imtiyaz Hussain
AU  - Naser, Rafiuddin.
TI  - A text book on environmental biology
SN  - 978-93-5056-231-4
U1  - GC 577 Z19 2013 
PY  - 2013///
CY  - New Delhi
PB  - Discovery Pub.
KW  - Ecology
N1  - Includes bibliographical references and index
ER  -