Wavelength dependence of ultraviolet-enhanced reactivation and induction of mammalian viruses /

Mode of access: Internet.

Illinois trees and shrubs: their insect enemies

Mode of access: Internet.

Illinois trees and shrubs: their insect enemies

Mode of access: Internet.

Illinois trees and shrubs: their insect enemies

Mode of access: Internet.

Effect of chlorination on human enteric viruses in partially treated water from the Potomac River estuary : study report /

At head of cover title: Northeastern United States Water Supply Study.

Methods of insect control.

Reproduced from type-written copy.

The Insect world; a monthly magazine

Japanese title: Konchu sekai.

Insect pest management guide.

Mode of access: Internet.

The forest insect and disease situation, Lake States, 1960 /

"April 1961."

Forest insect and disease notes.

Some vols. complete in one number.

Forest insect and disease conditions in the southwestern region /

"R3" cover.

Methods of insect control, parts I and II.

Includes bibliographies.

Insect and mite pests of apple in California /

Mode of access: Internet.

A glossary of some of the terms used in insect ecology.

Typewritten.

Forest insect handbook; North Pacific region.

Mimeographed.