Directory of field activities of the Bureau of Plant Industry
Subtitle: Issued December 1924
Series: U.S. Dept. of agriculture. Miscellaneous circular -- no. 30; Miscellaneous circular (United States. Dept. of Agriculture) -- no. 30.
Publisher: Govt. Print. Off.
Published: 1924
Place of publication: Washington
Language: eng
Number of pages: 62
Subjects: United States. Bureau of Plant Industry; United States