Buchanan, Herbert E.
Plane trigonometry
Johnson Pub., 1926
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Brink, Raymond
Plane trigonometry / Raymond Brink
D. Appleton-Century Co., 1940
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Ballou, Ronald H.
Plane and spherical trigonometry
Ginn, 1943
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Bauer, George N.
Plane and spherical trigonometry
D.C. Heath, 1932
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Fuller, Gordon
Plane trigonometry with tables / Gordon Fuller
McGraw-Hill, 1972
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