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90 Years and 535 Miles, Vegetation Changes Along the Mexican Border

Humphrey, Robert R.

Albuquerque: University of New Mexico Press, 1987. First Edition. Octavo (7¾" - 9¾" tall). Hard Cover. Very Good/Very Good. 448pp. Black and white photographs. Dust jacket has light fading to spine and some edge wear. More

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Arizona Range Grasses. Description, Forage Value, Management

Humphrey, Robert R., Albert L. Brown, and A. C. Everson

Tucson: Agricultural Experiment Station, Universiy of Arizona, 1958. Revised. Stapled Wraps. 8vo - over 7¾" - 9¾" tall. 8vo., 104pp. An important checklist of forage and natural range grass in Arizona. Annotated and illustrated, with bibliography and common name index. Revised with new materials not found in the 1952 original..... More