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Filtering by: Creator Ritcher, Paul O. Decade 1960-1969

White grubs and their allies : a study of North American scarabaeoid larvae

Creator:

Ritcher, Paul O.

Resource Type:

Book
Oregon vegetable digest ; Vol. 9 No. 4

Creator:

Oregon State University. Agricultural Experiment Station, Mack, H. J., Frazier, W. A., Ritcher, Paul O., Crowell, H. H., Baggett, James R., Duncan, Andrew A., Sistrunk, W. A., and Rodgers, J. B.

Abstract:

Published October 1960. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog

Resource Type:

Other
Oregon vegetable digest ; Vol. 13 No. 1

Creator:

Oregon State University. Agricultural Experiment Station, Mack, H. J., Singh, J. N., Ritcher, Paul O., Baggett, James R., Duncan, Andrew A., Jensen, Harold J., Hopper, W. Edward R., Duncan, A. A., Vaughan, E. K., Bullock, Richard M. (Richard Melvin), 1918-, Varseveld, G., and Cain, R. F. (Robert Farmer), 1917-2008

Abstract:

Published January 1964. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog

Resource Type:

Other
Biological control of insects and weeds in Oregon

Creator:

Ritcher, Paul O.

Abstract:

Published April 1966. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog

Resource Type:

Technical Report