An introduction to spherical trigonometry :
Clough-Smith, J. H.
An introduction to spherical trigonometry : with practical examples, for students of navigation, hydrographic surveying and nautical astronomy / J. H. Clough-Smith. - Glasgow : Brown, Sons & Ferguson Ltd., c1978. - viii,114 p. ; 22 cm.
085174320X
Area of a spherical triangle.
516.244 / CLO
An introduction to spherical trigonometry : with practical examples, for students of navigation, hydrographic surveying and nautical astronomy / J. H. Clough-Smith. - Glasgow : Brown, Sons & Ferguson Ltd., c1978. - viii,114 p. ; 22 cm.
085174320X
Area of a spherical triangle.
516.244 / CLO