000 00303nam a2200121Ia 4500
008 191031s9999 xx 000 0 und d
100 _aJames G.Needham
245 2 _aA guide to the study of fresh water biology
260 _bConstable and company
260 _c1962
365 _b22.50
942 _cBK
999 _c197896
_d197896