Mortl M M Ed. Proceeding on international clay conference Mortl M M Ed.; Farmer V C Ed. - Amsterdam Elsevier Scientific 1979 - xiv, 662p. cm. - Developments in sedimentology; 27 . Standard No.: 49705 Source: Textual Subjects--Topical Terms: ClayGeology Dewey Class. No.: H233p1,N78, L9