Carrying capacity of grazing ranges in southern Arizona . Fig. 2.—a Patch of Heteropogon contortus on the Reserve, Showing theHabit, Size, and Density of This Grass as It Grows in the Crowfoot GramaAssociation. Bui. 367, U. S. Dept, of Agriculture. Plate FiQ. 1.—A Characteristic Display of the Needle Grass Association underComplete Protection on the Santa Rita Range Reserve.

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Keywords: ., bookcentury1900, bookdecade1910, bookidcar, booksubjectrangelands