Advanced techniques for clay mineral analysis : invited contributions from the symposium held at the 7th International Clay Conference, September 6-12, 1981, Bologna and Pavia, Italy / edited by J.J. Fripiat. Fripiat, J. J. International Clay Conference (7th : 1981 : Bologna and Pavia, Italy) Clay Analysis Congresses. QE389.625 .A38 1982 553.61 19 FRA Includes bibliographical references and index. Amsterdam ; New York : Elsevier, 1982. 1982. 1982 Text 235 p. : eng Developments in sedimentology ; 34