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Industrial and Commercial Ohio: The extent and basis of the industrial development of Ohio. pt. 2. The distribution and fluctuations of industrial and commercial activity in the non-manufacturing industries of Ohio

出版	Bureau of business research College of commerce and administration, The Ohio state university, 1928
URL	http://books.google.com.hk/books?id=5a2w0iH6f8wC&hl=&source=gbs_api