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BJL CLASSMARKS (1-3 of 3)
GB 661 I6
1
Mark
Biological effects in the hydrological cycle.
International Seminar for Hydrology Profesors 3rd West Lafayette(Ind).
West Lafayette, Ind. : Purdue U. Agricultural Experiment Station., 1971.
The progress of hydrology.
International Seminar for Hydrology Professors 1st Urbana (ILL), 1969.
Urbana, Ill. : U.of Illinois at Urbana-Champaign., 1970.