=LDR 22 4500 =001 630 =082 04$a526.022 CHR =100 1\$aChristaller, Walter =245 10$aCentral places in southern Germany =260 \\$aUpper Saddle River, N.J. :$bPrentice Hall,$c1966 =650 \0$aBooks =852 \\$bFreeman Library$h526.022 CHR