000			00362nam a2200157Ia 4500
008			170324s9999 xx 000 0 und d
082			_a574.526
100			_a"Likens, Gene E."
245		0	_aEcosystem approach to aquatic ecology
260			_b"Springer - Verlag,"
260			_c1985
365			_b0.00
700			_aDebajit
700			_aSarma
942			_cBK
999			_c2122 _d2122