Trinchera distribution in the Sierra Madre Occidental, Mexico
Subtitle: [by] William A. Howard and Thomas M. Griffiths.
Contributors: Griffiths, Thomas Melvin, 1910-
Series: Publications in geography: technical paper no. 66-1
Publisher: Dept. of Geography, University of Denver
Published: 1966
Place of publication: [Denver]
Language: eng
Number of pages: 95
Subjects: Earthworks (Archaeology) -- Mexico -- Sierra Madre Mountains; Physical geography -- Mexico -- Sierra Madre Mountains
Notes: "Research ... supported by U.S. Army Natick Laboratories, Natick, Massachusetts, Project no. 1V025001A129 and Contract no. DA19-129-AMC-789(N)"  "Under the technical supervision of: Thomas M. Griffiths [and] Clark N. Crain."  Bibliography: p. 87-89.