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Impressions of applied insect pathology in the U.S.S.R

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By: Klassen, Waldemar. - United States. Agricultural Research Service.

Publication info: [Washington, U.S. Dept. of Agriculture, Agricultural Research Service], 1975

Holding Institution: U.S. Department of Agriculture, National Agricultural Library
The influence of the North Saskatchewan River Valley on the dispersion of Aedes

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By: Klassen, Waldemar.

Publication info: Edmonton, s.n, 1959

Holding Institution: University of Alberta Library