000 00269 a2200109 4500
008 190216b xxu||||| |||| 00| 0
100 _aWelch, Paul S
245 _aLimnology /
_cWelch, Paul S
260 _aNew york
_bMcgrow-Hill Book
_c1952
300 _a88 p.
942 _2ddc
_cBK
999 _c8134
_d8134