Loess and periglacial phenomena. Symposium of the INQUA Comm. on Loess: Lithology, genesis and geotechnic definitions and IGU Comm. for periglacial studies: Field and laboratory experimentation. Normandy, Jersey, Brittany, Caen, Aug. 1986. - Pécsi, Márton; French, Hugh M. (Studies in geography in Hungary, 1987)