KQ Proceeding of the VII International Clay Conference 1981 held in Bologna and Pavia, Italy, September 6-12, 1981 organized by the Italian Group of AIPEA, under the auspices of Association Internationale Pour I'Etude des Argile - International Clay Conference (7th : 1981 : Bologna and Pavia); Olphen, H. van; Veniale, F.; Association internationale pour l'etude des argiles. Italian Group (Amsterdam : Elsevier Science, 1982)
Keywords: Clay minerals -- Analysis -- Congresses