=LDR 22 4500 =001 3344 =082 04$a560.45 BEL =100 1\$aBell, Martin =245 10$aLate Quaternary environmental change: physical and human perspectives =260 \\$aLondon :$bLongman Scientific & Technical,$c1992 =650 \0$aBooks =700 1\$aWalker, M. J. C. =852 \\$bFreeman Library$h560.45 BEL