Stoddard, Edward.
Speed mathematics simplified. - 4ed. - New York, english university Press, 1964. - 271 p. 22 cm.
Bibliography: p. 271.
62012314
Ready-reckoners.
QA115 / .S79
510.83
Speed mathematics simplified. - 4ed. - New York, english university Press, 1964. - 271 p. 22 cm.
Bibliography: p. 271.
62012314
Ready-reckoners.
QA115 / .S79
510.83