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Phylogeny and form in the plant kingdom
Howard J. Dittmer
Bok Engelsk 1974
Modern plant biology
Howard J. Dittmer
Bok Engelsk 1972
The ferns and fern allies of New Mexico
by Howard J. Dittmer, Edward F. Castetter...
Bok Engelsk 1954
Lawn problems of the southwest : with supplemental information on the selection, transplanting, and care of trees and shrubs for the home
Howard J. Dittmer
Bok Engelsk 1950
The developmental anatomy of Descurainia pinnata ochroleuca (Woot.) Detling
by Howard J. Dittmer and Robert D. Spensl...
Bok Engelsk 1947