desert grassland
Subtitle: a history of vegetational change and an analysis of causes
By: Robert R. Humphrey.
Series: Bulletin / Arizona Agricultural Experiment Station -- 299.; Bulletin (University of Arizona. Agricultural Experiment Station) -- 299.
Publisher: University of Arizona Press
Published: 1958
Place of publication: [Tucson]
Language: eng
Number of pages: 62
Subjects: Grasslands.; Botany -- Southwest, New.; Plant ecology.
Notes: Caption title.

Bibliography: p. 56-62.