Limitations in the use of the end-window counter in the assaying of stream waters for beta radioactivity /

Mode of access: Internet.

Worth of stream flow data for project design : a pilot study /

Mode of access: Internet.

Hypothetical flood computation for a stream system /

Mode of access: Internet.

Directions for collecting and preserving insects /

At head of tile: Smithsonian Institution. United States National Museum.

A manual of dangerous insects likely to be introduced in the United States through importations.

At head of tltle: Issued Aug. 15,1917. U.S. Dept. of agriculture, Office of the secretary. Contribution from the Bureau of entomology, L. O. Howard, chief, in collaboration with the Federal horticultural board, C. L. Martlatt, chairman.

The male genitalia of orthopteroid insects.

Mode of access: Internet.

Key to shelterbelt insects in the Northern Great Plains /

Includes index.

The Tertiary insects of North America.

At head of title: United States Geological Survey of the Territories.

The Russian River, a characteristic stream of the California coast ranges,

Includes bibliographical references.

Annotated bibliography on the effects of irrigation practices on stream water quality with emphasis on salinity and pesticides /

Mode of access: Internet.

Stream flow records : for the water year ... /

Prepared 1933/34-1940/41 in cooperation with the United States Geological Survey.

Natural history of birds, fish, insects, and reptiles.

Binder's title: Buffon's natural history.

Principles of snow surveying as applied to forecasting stream flow.

Mode of access: Internet.

Destructive insects affecting Ohio shade and forest trees /

Cover title.

A text-book of entomology, including the anatomy, physiology, embryology and metamorphoses of insects, for use in agricultural and technical schools and colleges as well as by the working entomologist,

Bibliographies interspersed.