000
00285 a2200109 4500
008
190219b xxu||||| |||| 00| 0
100
_a
Walch, Paul S.
245
_a
Limnological methods /
_c
S. Paul Welch
260
_a
New York
_b
McGraw Hill Book Co.
_c
1948
300
_a
381p.
942
_2
ddc
_c
BK
999
_c
8499
_d
8499