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	1.		World exploring of science by Obourn, Ellsworth S Material type: Text; Format: print ; Literary form: Not fiction Publication details: Princeton: D. Van Nostrand Company, Inc., 1963 Availability: Items available for loan: National Science Library (1)Call number: 5/6:37 K3. Place hold Add to cart (remove)
	2.		Investigating of science by Obourn, Ellsworth S Heiss, Elwood (Ed.) Material type: Text; Format: print ; Literary form: Not fiction Publication details: New York: D. Van Nostrand Company, Inc., 1966 Availability: Items available for loan: National Science Library (1)Call number: 5:373.5 K6. Place hold Add to cart (remove)

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