000 00229nam a22000977a 4500
100 _aAEYA,MOHAN LAL;
_aGOLA,RAJKUMARI;
245 _aENVIRONMENTAL SCIENCES
260 _aMEERUT:
_bGYAN PUB.
_c2024
300 _aviii;136p
942 _cBK
999 _c15924
_d15924