Decimals and percentage
By: by Betty K. Friel. Prepared under the direction of Educational Science Division, U.S. Industries, inc.
Edition: [1st ed.]
Series: A Tutor text
Publisher: Doubleday
Published: 1964
Place of publication: Garden City, N.Y
Language: eng
Number of pages: 504
Subjects: Decimal system -- Programmed instruction.; Percentage -- Programmed instruction.