000			nam a22 7a 4500
999			_c957 _d957
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005			20180704132028.0
008			180704b xxu||||| |||| 00| 0 eng d
020			_a0632006161
082			_a574.52632 _bDOW
100			_aDowning, J. A.(ed.)
110			_aRigler, Frank H.(ed.)
245			_aA Manual on methods for the assessment of secondary productivity in fresh waters / _cEdited by John A Downing & Frank H Rigler.
260			_aBoston : _bBlackwell Scientific Publications ; _c1971.
300			_axxiv ; 501 p., _c24 cm.
942			_2ddc _cBK