by Alfred Merle Beeton
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Chemistry, temperature, and secchi disc ...
Limnological survey of Lake Erie, 1959 a...
Physical limnology of Saginaw Bay, Lake ...
Investigation of the influence of therma...
Effects of chlorine and sulfite reductio...
At the Waterworks
Inside the Earth (Magic School Bus)
Fiabe italiane
Hydrologic data, 1964
Hydrologic data, 1965
Hydrologic data, 1966