Velde, B. Clay minerals : a physico-chemical explanation of their occurrence / B. Velde. - Amsterdam : Elsevier, 1985. - xiii, 427 p. : ill. - Developments in sedimentology ; 40 . ISBN: 0444424237 (U.S.) : fl 160.00 Subjects--Topical Terms: Clay minerals. LC Class. No.: QE389.625 / .V43 1985 Dewey Class. No.: 549/.6�19