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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.
Date:
April 1940
Creator:
United States. Forest Service.
System:
The UNT Digital Library
Theory of ballooning.
A general guide to piloting a free balloon.
Date:
April 25, 1940
Creator:
United States. War Department.
System:
The UNT Digital Library
Cooperative Grain Marketing by Local Warehouses and Elevators in the Pacific North West
Bulletin discussing about the grain marketing techniques by the local warehouses and elevators in the pacific north west.
Date:
April 1940
Creator:
Ratcliffe Harry E.
System:
The UNT Digital Library
Powdery Mildew of Ornamental Plants.
Describes the powdery mildew fungus and methods for its control.
Date:
April 1940
Creator:
Weiss, Freeman
System:
The UNT Digital Library