=LDR 22 4500 =001 4423 =082 04$a930.1 ROE =100 1\$aRoe, Derek =245 10$aPrehistory: an introduction =260 \\$aLondon :$bMacmillan,$c1970 =650 \0$aBooks =852 \\$bFreeman Library$h930.1 ROE