PLANE TRIGONOMETRY AND FOUR-PLACE TABLES OF LOGARITHMS
WILLIAM ANTHONY GRANVILLE1920 年出版229 页ISBN：
SCHAUM’S OUTLINE OF THEORY AND PROBLEMS OF PLANE AND SPHERICAL TRIGONOMETRY
FRANK AYRES1954 年出版207 页ISBN：
Elements of The Topology of Plane Sets of Points
M.H.A.Newman2222 年出版221 页ISBN：
