DICKSON - Plane Trigonometry With Practical Applications - New paperba - X555z

Peirce - An Elementary Treatise On Plane Spherical Trigonometry Wit - X555z

Plane Trigonometry, Leonard E. Dickson 1970 ISBN: 0828402302 HC

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Wilczynski - Plane Trigonometry and Applications - New paperback or so - X555z

Colenso - Plane Trigonometry. With Solutions of Examples - New paper - X555z

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