=LDR 22 4500 =001 48 =082 04$a551.38 CLA =100 1\$aClark, M. J. =245 10$aAdvances in Periglacial geomorphology =260 \\$aChichester :$bWiley,$c1987 =650 \0$aBooks =852 \\$bFreeman Library$h551.38 CLA