000 00311 a2200121 4500
008 190225b xxu||||| |||| 00| 0
100 _aEdmondson, W.T.
245 _aFreshwater Biology /
_cW.T. Edmondson
250 _a2nd ed.
260 _aNew York
_bJohn willey sons, Inc.
_c1959
300 _a618p.
942 _2ddc
_cBK
999 _c9030
_d9030