Bibliography of North American Geology for 1912: With Subject Index

By John Milton Nickles, United States Geological Survey

Subjects: british columbia, sandstone, deep red, canyon, auger lentil, grand canyon, river, conglomerate, rocks, west virginia, quartz, coal field, auger, mineral resources, short distance, red clay, feet, creek, ore, north american

Description: Book digitized by Google and uploaded to the Internet Archive by user tpb.