000 00310nam a22001337a 4500
003 OSt
008 231224b |||||||| |||| 00| 0 eng d
082 _a597
_bG28E
100 _aGerking,S.D.
245 _aEcology of fresh water fish production
260 _aBlackwell
_c1978
300 _a532
942 _2ddc
_cBK
999 _c34956
_d34956