Conservation of renewable natural resources
some fundamental aspects of the problem
University of Pennsylvania
Bicentennial Conference.
creator
Zon, Raphael
1874-1956
text
bibliography
pau
Port Washington
Kennikat Press
[1969, c1941]
1969
monographic
eng
vi, 200 p. illus., maps. 25 cm.
by Raphael Zon [and others]
Includes bibliographies.
Conservation of natural resources
United States
Ozone
Physiological effect
Botany
United States
United States
Climate
S942 .P45 1969
333.7/2/0973
Essay and general literature index reprint series
Monographs 2
Pennsylvania.
University.
Morris Arboretum.
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