=LDR 22 4500 =001 6419 =082 04$a330.9 THO =100 1\$aThoman, Richard S. =245 10$aThe Geography of Economic Activity 2nd Ed. =260 \\$aNew York :$bMcGraw-Hill Book Company,$c1968 =650 \0$aBooks =700 1\$aConkling, Edgar C. =700 1\$aYeates, Maurice H. =852 \\$bGeography Basement$h330.9 THO