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of activities in the field of natural resources
University of Michigan. Publ. in connection with
the celebration of the semicentennial of the be-
ginning of professional instruction in forestry,
October 1-3, 1953* (Samuel T. ¿ana^ed.)
8:o Ann Arbor 1953*

History
of activities in the field of natural resources,
University of Michigan. Publ. in connection with
the celebration of the semicentennial of the be-
ginning of professional instruction in forestry,
October 1-3, 1953. (Samuel T. Dana:ed.)
8so Ann Arbor 1953.