Abstracts of contributed papers.
Contributors: American Association for the Advancement of Science. Committee on Arid Lands.; International Conference on Arid Lands in a Changing World (1969 : University of Arizona).
Publisher: University of Arizona
Published: 1969
Place of publication: Tucson
Language: eng
Subjects: Agriculture -- Congresses.; Arid regions -- Congresses.
Notes: Cover title.
"Sponsored by the American Association for the Advancement of Science, Committee on Arid Lands."