000			00362nam a2200133Ia 4500
008			211224s9999 xx 000 0 und d
020			_a9788176485890
082			_a581.7 KUM
100			_aArvind Kumar
245		2	_aA textbook of environmental science
260			_aNew Delhi: _bA. P. H. Pub. Corp, _c2009
300			_axii, 376 p
650			_aEnvironmental Science
999			_c8203 _d8203