O'Sullivan, Robert B. 1923-
The upper part of the upper Triassic Chinle formation and related rocks, Southeastern Utah and adjacent areas / by Robert B. O'Sullivan. -- Washington : United States Government Printing Office, 1970 - 22 p. -- (Geological Survey Professional Paper ; 644-E).
Rocas
Triásico
Utah
552(792)"6151"
The upper part of the upper Triassic Chinle formation and related rocks, Southeastern Utah and adjacent areas / by Robert B. O'Sullivan. -- Washington : United States Government Printing Office, 1970 - 22 p. -- (Geological Survey Professional Paper ; 644-E).
Rocas
Triásico
Utah
552(792)"6151"