UNT Libraries Government Documents Department - 3 Matching Results

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Work of the United States Forest Service.
Discusses forest depletion and provides a history of forest conservation efforts by the United States government. Describes the work of the the Civilian Conservation Corps and other emergency projects, and discusses forest and range research.
Powdery Mildew of Ornamental Plants.
Describes the powdery mildew fungus and methods for its control.
Theory of ballooning.
A general guide to piloting a free balloon.