TY - SER AU - Cameron,t.D.J AU - Anderson,t.B TI - Silurian metabentonites in County Down, northern Ireland SN - 00721050 KW - Bentonite KW - Silurien KW - Géochimie KW - Altération KW - Ulster KW - County DOwn N1 - ; bibliogr. p. 74-75 ER -