=LDR 22 4500 =001 2858 =082 04$a519.5 4 02491 =100 1\$aNorcliffe, G. B. =245 10$aInferential statistics for geographers =260 \\$aLondon :$bHutchinson,$c1977 =650 \0$aBooks =852 \\$bFreeman Library$h519.5 4 02491