http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Guidebook to the geology of the Pennsylvania Turnpike
v, 72 pages : illustrations, maps (part folded color)
by Arthur B. Cleaves and Robert C. Stephenson.
At head of title: Pennsylvania Geological Survey, fourth series.
Bulletin (Pennsylvania. Bureau of Topographic and Geologic Survey) ; G24