""Geology Of The Navajo Country: A Reconnaissance Of Parts Of Arizona, New Mexico, And Utah"" is a comprehensive and detailed account of the geological features of the Navajo Country, written by Herbert Ernest Gregory and originally published in 1917. The book is based on the author's extensive fieldwork and research in the region, and provides a thorough analysis of the geology, mineralogy, and paleontology of the area.The book is divided into several...