Frenzel LD, Lawrence D, Marshall WH, Morley T, Thoma B, French DW. 1970. Further considerations of a plan for use zonation of Itasca State Park. Advisory Committee to the Conservation Commissioner for Scientific and Natural Areas.
Frenzel, L.D.; Lawrence, Don; Marshall, William H.; Morley, Thomas; Thoma, Ben; French, David W..
Further considerations of a plan for use zonation of Itasca State Park.
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