Higher trigonometry /
Das, B. C.
Higher trigonometry / B.C.Das, B.N. Mukherjee. - 26th ed. - Calcutta : U.N. Dhur & Sons Privated, c1993. - xiv, 313 p. : ills. ; 22 cm.
8185624232
Trigonometry.
516.24 / DAH
Higher trigonometry / B.C.Das, B.N. Mukherjee. - 26th ed. - Calcutta : U.N. Dhur & Sons Privated, c1993. - xiv, 313 p. : ills. ; 22 cm.
8185624232
Trigonometry.
516.24 / DAH