=LDR 22 4500 =001 5034 =082 04$a551.4 36 =100 1\$aYoung, Anthony =245 10$aSlopes =260 \\$aLondon :$bLongman,$c1975 =650 \0$aBooks =700 1\$aClayton, K. M. =852 \\$bFreeman Library$h551.4 36$zNot located