000 00420nam a2200181 4500
020 _a
_c
082 _a577.6072 WEL-L
100 _aWelch, Paul S
245 _aLimnological methods
250 _a
260 _aMcgraw Hill Book Co., New York
_c1948
300 _a381
490 _a
500 _a
590 _aPRP
_b2011-04-05 09:11:53
_c
650 _aLimnology-- Research & Statistical methods
942 _cBK
999 _c232147
_d232147