000 00271nam a2200097Ia 4500
008 230930s9999||||xx |||||||||||||| ||und||
100 _aYADAV P.R. & MISHRA R. SHUBHRATA
245 0 _aENVIRONMENTAL ECOLOGY
260 _aNEW DELHI, INDIA
260 _bDISCOVERY PUBLISHING HOUSE
999 _c12450
_d12450