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The Trachtenberg Speed System of Basic Mathematics / tr. Ann Cutler - New York : A Bantam Book, 1973 - 239 p. ; 18 cm. - Bantam Science and Mathematics .

Subjects--Topical Terms:
Aritmética
Trachtenberg, Jakow, 1888-
Trachtenberg, Jakow, 1888-

LC Class. No.: QA 115 C88