000 00313nam a2200121Ia 4500
008 170101s1971 xx 000 0 und d
082 _a639.312 BEN
100 _aBennett George W.
245 0 _aManagement of Lakes and Ponds
260 _bVan Nostrand Reinhold Co.,
_c1971
300 _a375 pl
942 _2ddc
_cB
999 _c265366
_d265366