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Arid lands in transition; [papers]

Arid lands in transition; [papers] Edited by Harold E. Dregne. - Washington [American Association for the Advancement of Science] 1970. - xiii, 524 p illus., maps 24 cm. - Publication (American Association for the Advancement of Science) no. 90. .

Includes bibliographies.

ISBN: 0871680904

Subjects--Topical Terms:
Agriculture--Congresses.
Arid regions--Congresses.

LC Class. No.: S613 / .I48 1969