Higher trigonometry /
Das, B. C.
Higher trigonometry / B.C.Das, B.N. Mukherjee. - 20th ed. - New Delhi : U.N. Dhur & Sons Privated, c2009. - xvi,287 p. ; 22 cm.
Trigonometry.
516.24
Higher trigonometry / B.C.Das, B.N. Mukherjee. - 20th ed. - New Delhi : U.N. Dhur & Sons Privated, c2009. - xvi,287 p. ; 22 cm.
Trigonometry.
516.24