000			00380nam a2200145Ia 4500
008			180612s9999||||xx |||||||||||||| ||und||
020			_a81-7648-406-7
041			_aen
082			_a363.7
100			_aArvind Kumar.
245		0	_aEnvironmental challenges of the 21st century.
260			_aNew Delhi _bA.P.H. Publishing Corporation _c2003
300			_axii, 673 P
942			_cPR
999			_c58055 _d58055