
KRAUSE, DR. K.; SMITHSONIAN INSTITUTION

BANCROFT LIBRARY, UNIVERSITY OF CALIFORNIA

HARTMAN, DR. CLIFF R.; JONES, DR. RUSSELL; NOVATNEY, DR. DOROTHY

SUPREME COURT OF THE UNITED STATES

FEDERAL COOPERATIVE EXTENSION SERVICE, OREGON STATE COLLEGE

SCHULTZ, LEONARD P.; NATIONAL GEOGRAPHIC MAGAZINE


LANTZ, DAVID E.; U. S. DEPARTMENT OF AGRICULTURE

HANSON, KARL B.; U. S. DEPARTMENT OF AGRICULTURE, BUREAU OF BIOLOGICAL SURVEY

ROHWER, CARL; U. S. DEPARTMENT OF AGRICULTURE

CO-OPERATIVE CHRISTIAN FEDERATION

SELF-DEFENSE COMMITTEE, PORTLAND, OREGON

UNIVERSITY OF KANSAS; VAN DER VRIES, JOHN; ADAMS, C. F.; HARRIS, J. ARTHUR

JENKINS, J. MITCHELL; LOUISIANA STATE UNIVERSITY; U. S. DEPARTMENT OF AGRICULTURE

SNELL, M. G.; LOUISIANA STATE UNIVERSITY

U. S. DEPARTMENT OF AGRICULTURE, FOREST SERVICE

MERRIAM, C. HART; color plates by THOMPSON, ERNEST E.




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