01136cam a22002891 4500 gs 23000276 DLC 20260227111327.0 761220s1922 mduaf 001 0 eng c gs 23000276 (OCoLC)2636201 Library, U. S. Geological Survey TxWB DLC premarc TN942 .W27 Watts, Arthur Simeon, 1876- The fire clays of Maryland, by Arthur S. Watts, H. G. Schurecht, Charles K. Swartz and George M. Hall. With an introductory chapter by Edward B. Mathews. Baltimore, The Johns Hopkins press, 1922. 270 p. illus., IV pl., tables, diagrs. 26 cm. Maryland. Geological survey, 1896- Special publications. Vol. XI, pt. 2 Also published in Maryland. Geological survey. [Reort] Vol. XI (1922) p. [289]-559. Fire-clay. Clay Maryland. Schurecht, Harry George, 1892- Swartz, Charles Kephart, 1861- Hall, George Martin, 1891- Mathews, Edward Bennett, 1869- 26270 26270