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	1.	Social and economic character of unemployment in Philadelphia, April, 1929, by Dewhurst, James Frederic, 1895-1967 Tupper, Ernest Allen, 1902- [joint author.] Wharton School. Industrial Research Department Material type: Text; Format: print ; Literary form: Not fiction Publication details: Washington, U.S. Govt. print. off., 1930 Availability: No items available. Add to cart (remove)
	2.	Capital requirements and operating ratios : the agricultural machinery industry, 1950 and 1951. by Wharton School. Industrial Research Department United States. Foreign Operations Administration. Industrial Technical Assistance Division Series: BLS report ; no. 25 Material type: Text; Format: print ; Literary form: Not fiction Publication details: [Washington : U.S. Govt. Print. Off.] 1954 Availability: No items available. Add to cart (remove)

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