Das , B. C.
Higher Trigonometry / B. C. Das and B. N. Mukherjee. - 26th ed. - Calcutta : U. N. Dhur & Sons Pvt. Ltd., c1933 [repriented 1993]. - 313 p. : ill. ; 18 cm.
8185624232
Trigonometry.
516.24
Higher Trigonometry / B. C. Das and B. N. Mukherjee. - 26th ed. - Calcutta : U. N. Dhur & Sons Pvt. Ltd., c1933 [repriented 1993]. - 313 p. : ill. ; 18 cm.
8185624232
Trigonometry.
516.24