The language of triangles
Crown, A. W
The language of triangles A. W. Crown - Oxford, New York, Pergamon Press; Macmillan [1964-] - 3 v. illus. 21 cm.
2011022309
Trigonometry.
The language of triangles A. W. Crown - Oxford, New York, Pergamon Press; Macmillan [1964-] - 3 v. illus. 21 cm.
2011022309
Trigonometry.