000
00309nam a22001457a 4500
003
SGT
020
_a
978-8121908597
082
_b
VER
100
_a
VERMA,PS
245
_a
ENVIRONMENTAL BIOLOGY
260
_a
NEW DELHI
_b
S. CHAND & COMPANY
_c
2000
300
_a
591
650
_a
AGRICULTURE
942
_2
ddc
_c
BK
999
_c
13762
_d
13762