Trigonometry /
Edwards, Cyril.
Trigonometry / by Cyril Edwards ; edited by Wilkinson, Angela. - London : Macdonald and Co., 1974. - 24 p. : col ill ; 28 cm. - Macdonald Educational Colour Units, Mathematics .
0356046702 (hbk.)
Trigonometry.
Trigonometry - For schools.
Mathematics.
516.24
Trigonometry / by Cyril Edwards ; edited by Wilkinson, Angela. - London : Macdonald and Co., 1974. - 24 p. : col ill ; 28 cm. - Macdonald Educational Colour Units, Mathematics .
0356046702 (hbk.)
Trigonometry.
Trigonometry - For schools.
Mathematics.
516.24