Rubber content and habits of a second desert milkweed (Asclepias erosa) of southern California and Arizona
By: by R.E. Beckett, R.S. Stitt, and E.N. Duncan.
Contributors: Stitt, R. S. 1886-; Duncan, E. N. 1910-; United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 604; Technical bulletin (United States. Dept. of Agriculture) -- no. 604.
Publisher: U.S. Dept. of Agriculture
Published: 1938
Place of publication: Washington
Language: eng
Number of pages: 12
Subjects: Milkweeds.; Rubber plants -- California.; Rubber plants -- Arizona.
Notes: Caption title.

Literature cited: p. 11.