This study¹ was undertaken: (1) to obtain information on the distribution of the snail, Oxytrema silicula, in three coastal rivers in Oregon, and the seasonal incidence of infection in these snails and in snails from an inland stream, with the cercariae of the trematode, Nanophyetus salinincola; (2) to follow cercarial...
This report is largely concerned with the toxicity of Sevin (carbaryl) and Dursban (chlorpyrifos) on aquatic organisms. "The general objective of this research is to investigate the effects of various pesticides, which might be expected or are known to occur in estuaries, on the larval and adult stages of estuarine...
Gravity measurement program in Oregon / John V. Thiruvathukal and Joseph W. Berg, Jr. -- The principle of discovery and the problems arising therefrom / Raymond B. Holbrook.