Conservation of natural resources
By: prepared by Conway L. Rhyne and Ellsworth E. Lory for the Committee on experimental units of the North central association of colleges and secondary schools.
Contributors: Lory, Ellsworth E., joint author.; North Central Association of Colleges and Secondary Schools. Committee on Experimental Units.
Series: Unit studies in American problems
Publisher: Ginn and company
Published: 1944
Place of publication: Boston; New York [etc.]
Language: eng
Number of pages: 110
Subjects: Natural resources -- United States.
Notes: Includes bibliographies.