The Grasses of Iowa . By L. H. Pammel, Ph.D., J. B. Weems, Ph.D., of Iowa State College of Agriculture and the Mechanic Arts, and F. Lamson-Scribner, Agrostologist, U. S. Department of Agriculture, Des Moines, Iowa. F. R. Conway, State Printer, 1901. Bulletin No. I, of the Iowa Geological Survey. Pp. 525; with 11 plates and 514 engravings.
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