The Central American species of Quercus /

Includes 124 p. of plates.

Bark structure of North American conifers /

Literature cited: p. 84-85.

The North American subspecies of Culicoides variipennis (Diptera, heleidae) /

References: p. 34-35.

Composition of American honeys / by Jonathan W. White ... [et al.].

Includes indexes.

Airborne movement of the pink bollworm and other arthropods /

"United States Department of Agriculture in cooperation with the Texas Agricultural Experiment Station".

An annotated list of the important North American forest insects /

Caption title.

American fertilizers /

"Issued May, 1932."

Descriptions of types of principal American varieties of tomatoes /

Caption title.

Descriptions of types of principal American varieties of cabbage /

"March 1934."

Food plants of the North American Indians /

Includes index.

Descriptions of types of principal American varieties of spinach /

Includes index.

Descriptions of types of principal American varieties of orange-fleshed carrots /

Prepared jointly by specialists of the United States Department of Agriculture, Cornell University, and the experiment stations of California, Louisiana, Minnesota, Texas, and Virginia.

A revision of the North American aphids of the genus Myzus /

Copy 2: Amer. Ent. Soc. QL523.A6M3.

Descriptions of types of principal American varieties of red garden beets /

Includes indexes.

The strength of North American woods /

Chiefly tables.