Clay minerals.

Clay minerals Velde, B. 1985 Clay minerals Nemecz, Ernő 1981 Clay minerals and the origin of life edited by A.G. Cairns-Smith and H. Hartman 1986 Clays and clay minerals Franks, Paul C 1962 Clays in the critical zone Schroeder, Paul A. Year not listed Formation and properties of clay-polymer complexes Theng, B. K. G. 1979 International clay conference, 1978 organized by the Clay Minerals Group, Mineralogical Society, London, under the auspices of Association internationale pour l'étude des argiles ; edited by M. M. Mortland and V. C. Farmer 1979