International clay conference : proceedings of the international clay conference, Stockholm, Sweden, Aug. 12-16, 1963 / edited by I.Th. Rosenqvist and Graff Petersen
International clay conference : proceedings of the international clay conference, Stockholm, Sweden, Aug. 12-16, 1963 / edited by I.Th. Rosenqvist and Graff Petersen - - Oxford Pergamon Press, 1965 - v.2 22 cm - .
0
Clay minerals-Congresses
Clay-Congresses
553.61 Int:63-2