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Material Type: Theses
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Creator: Helfrich, Louis A. (Louis Anthony), 1942-
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Electronic Theses & Dissertations
2
Language
English
2
Copyright Status
In Copyright
2
Subject
Algae
1
Phosphorus
1
Plankton
1
Plankton populations
1
Pond ecology
1
Predation (Biology)
1
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Availability of phosphorus-32, absorbed on clay particles, to a green alga
Helfrich, Louis A. (Louis Anthony), 1942-
Text (1972)
Part of
Electronic Theses & Dissertations
Effects of predation by fathead minnows, Pimephales promelas, on planktonic communities in small, eutrophic ponds
Helfrich, Louis A. (Louis Anthony), 1942-
Text (1976)
Part of
Electronic Theses & Dissertations
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