000			00430nam a2200169Ia 4500
003			NIELib
008			211019s9999||||xx |||||||||||||| ||und||
020			_a81-7041-682-5
082			_a574.5 _bTRI
100			_aTrivedi, R, N
245			_aA textbook of environmental sciences
260			_bAnmol, _c1993. _aNew Delhi :
300			_aix,410p.; _c22cm
650			_aEnviromental Education
650			_aBiology
942			_2ddc _cLM
999			_c1566 _d1566