MSU Libraries
Digital Repository
Home
About
Collections
Selected facets
Collection: Electronic Theses & Dissertations
×
Creator: Helfrich, Louis A. (Louis Anthony), 1942-
×
Material Type
Theses
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
Search results
Showing 1 to 2 of 2 results
Results per page
20
50
100
Sort by
Most Relevant
Title (A-Z)
Title (Z-A)
Date (Newest)
Date (Oldest)
Most Recent
Least Relevant
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
First
1
(current)
Last
