Rocky times in Rocky Mountain National Park : an unnatural history - Hess Karl 1947 (Niwot, Colo. : University Press of Colorado, 1993)
Includes bibliographical references (p. 125-156) and index.
Keywords: Nature conservation -- Colorado -- Rocky Mountain National Park; Ecology -- Colorado -- Rocky Mountain National Park; Rocky Mountain National Park Colo -- Management; Rocky Mountain National Park Colo -- History