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	1.	Algebra and trigonometry / by Cohen, David. Material type: Text Publication details: St. Paul, MN : West Pub. Co., c1986Availability: Items available for loan: Gabriel Afolabi Ojo Central Library (Headquarters). (1)Call number: QA154.2 .C64 1989. Found in Open Library: Place hold Add to cart (remove)
	2.	Precalculus with Unit-Circle Trigonometry by Cohen David \| Theodore B. Lee \| David Sklar. Edition: 4th editionMaterial type: Text Publication details: Brooks/Cole 2006Availability: Items available for loan: Faculty of Science Library (1)Call number: QA331.3 .C63 2006. Found in Open Library: Place hold Add to cart (remove)

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