Más obras de Earle E. Spamer
The Colorado River
Bibliography of the Grand Canyon and the lower Colorado River, 1540-1980
1981
Bibliography of the Grand Canyon and the lower Colorado River from 1540
1990
Bibliography of the Grand Canyon and the lower Colorado River, from 1540 (Grand Canyon Natural History Association monograph)
1993
The development of geological studies in the Grand Canyon
1989
The Development of Geological Studies in the Grand Canyon (Tryonia, No 17)
1989