A study of phylloxera infestation in California as related to types of soils
By: by R.L. Nougaret and Macy H. Lapham.
Contributors: Lapham, Macy H. b. 1874.; United States. Dept. of Agriculture.
Series: Technical bulletin / United States Department of Agriculture -- no. 20; Technical bulletin (United States. Dept. of Agriculture) -- no. 20.
Publisher: U.S. Dept. of Agriculture
Published: 1928
Place of publication: Washington
Language: eng
Number of pages: 39
Subjects: Phylloxera.; Viticulture -- California.; Grapes -- Diseases and pests -- California.
Notes: Caption title.

Map titled : Map showing relation to phylloxera infestation to types of soil.

Literature cited: p. 38.