The cottony maple scale (Pulvinaria innumerabilis Rathvon).
By J. G. Sanders.

APA Citation

Sanders, J. Glossbrenner., United States. Department of Agriculture., United States. Bureau of Entomology. (1905). The cottony maple scale (Pulvinaria innumerabilis Rathvon). [Washington: Gov't. Print. Off..

MLA Citation

Sanders, James Glossbrenner, 1880-1957, United States. Department of Agriculture, and United States. Bureau of Entomology. The Cottony Maple Scale (Pulvinaria Innumerabilis Rathvon). [Washington: Gov't. Print. Off., 1905.

Warning: These citations may not always be complete (especially for serials).