Butler, Charles Henry, 1894-
The teaching of secondary mathematics / Charles H. Butler, F. Lynwood Wren. - 4th ed. - New York : McGraw-Hill, [1965]. - 613 p. - Supervision curriculum and methods in education McGraw-Hill series in education. .
Mathematics--Study and teaching (Secondary).
The teaching of secondary mathematics / Charles H. Butler, F. Lynwood Wren. - 4th ed. - New York : McGraw-Hill, [1965]. - 613 p. - Supervision curriculum and methods in education McGraw-Hill series in education. .
Mathematics--Study and teaching (Secondary).