Sticker, Henry.
How to calculate quickly; the art of calculation. - [New York] Dover Publications [1955] - 256 p. 19 cm.
First published in 1945 under title: The art of calculation.
56003700
Mental arithmetic.
QA111 / .S84 1955
511
How to calculate quickly; the art of calculation. - [New York] Dover Publications [1955] - 256 p. 19 cm.
First published in 1945 under title: The art of calculation.
56003700
Mental arithmetic.
QA111 / .S84 1955
511