SMCHS Research Library Search for 'au:"Clark, William Bullock"'

Report on the physical features of Maryland, together with an account of the exhibits of Maryland mineral resources made by the Maryland Geological Survey

By Clark, William Bullock. Baltimore, MD Johns Hopkins Press 1906 . 284 pages

By Clark, William Bullock. Baltimore, MD Johns Hopkins Press 1905 . 651 pages

By Clark, William Bullock. Baltimore, MD Johns Hopkins 1918 . 167 pages