Teaching the new arithmetic
Wilson, Guy M
Teaching the new arithmetic Guy M Wilson - New York : Mc Graw-Hill, 1951. - xiv, 483 p. ; 22 cm. - Mc Graw-Hill series in education .
Arithmetic- Study and teaching
511 WIL
Teaching the new arithmetic Guy M Wilson - New York : Mc Graw-Hill, 1951. - xiv, 483 p. ; 22 cm. - Mc Graw-Hill series in education .
Arithmetic- Study and teaching
511 WIL