=LDR 22 4500 =001 2836 =082 04$a330.9 EST =100 1\$aEstall, R. C. =245 10$aIndustrial Activity and Economic Geography: a study of the forces behind the geographical location of productive activity in manufacturing industry =260 \\$aLondon :$bHutchinson,$c1966 =650 \0$aBooks =852 \\$bGeography Basement$h330.9 EST