List of Widco logs run by State Geological Survey
Subtitle: before September 1, 1961
By: by Lynn S. Hedges
Series: South Dakota. State Geological Survey. Circular -- no. 31; Circular (South Dakota Geological Survey) -- 31.
Publisher: University of South Dakota
Published: 1961
Place of publication: Vermillion
Language: eng
Number of pages: 13
Subjects: Borings