NALDC

Main content area

MLA

Hofer, George. The aspen borer and how to control it. U.S. Dept. of Agriculture, 1920.

APA

Hofer, George. (1920). The aspen borer and how to control it. U.S. Dept. of Agriculture.

Chicago

Hofer, George The aspen borer and how to control it. U.S. Dept. of Agriculture, 1920.