The fire clays of Maryland,
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.
gs 23000276
Fire-clay.
Clay--Maryland.
TN942 / .W27
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.
gs 23000276
Fire-clay.
Clay--Maryland.
TN942 / .W27