Ladd, George Edgar, 1864-1940. A preliminary report on a part of the clays of Georgia, by Geo. E. Ladd ... - [Atlanta, G.W. Harrison, state printer] 1898. - 204 p. illus. XVII pl. (incl. front.) map. 26 cm. - Georgia. Geological survey. Bulletin no. 6A . Bibliography: p. 193-199. LCCN: gs 05000290 Subjects--Topical Terms: Clay--Georgia.Clay--Testing. LC Class. No.: QE101 / .A12 no. 6A