Central Library OPAC University of Rajshahi

How to use adding and calculating machines : ten-key, full-key, rotary, key-driven /

Walker, Arthur L. 1899-

How to use adding and calculating machines : ten-key, full-key, rotary, key-driven / A.L. Walker, J.K. Roach. and J.M. Hanna. - 2nd ed. - New York : Gregg Pub. Division, c1960. - 250 p. : ill. ; 28 cm.


Calculators.

681.145 / WAH 1960