Trigonometry/
Cohen, David.
Trigonometry/ David Cohen. - New York: West publishing, 1992. - xii,397 [77]p.: ill.; [some col] 22cm.
Includes index.
031493166x
Trigonometry.
QA 531.C64 1992
Trigonometry/ David Cohen. - New York: West publishing, 1992. - xii,397 [77]p.: ill.; [some col] 22cm.
Includes index.
031493166x
Trigonometry.
QA 531.C64 1992