http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Geologic map of the Threadgill Creek Quadrangle, Gillespie and Mason Counties, Texas
Threadgill Creek quadrangle, Gillespie and Mason Counties, Texas
Title from text on map: Threadgill Creek quadrangle, Gillespie and Mason Counties, Texas.
Geologic quadrangle map (University of Texas at Austin. Bureau of Economic Geology) ; no. 20