Spectrum mathematics : yellow book /
Richards, Thomas J.
Spectrum mathematics : yellow book / Thomas J. Richards. - 3rd ed. - Ohio : McGraw-Hill, c1990. - xvi, 157 pages : illustrations ; 27 cm
084451425x
Arithmetic--Study and teaching.
Mathematics--study and teaching.
QC92 / R39 1990
Spectrum mathematics : yellow book / Thomas J. Richards. - 3rd ed. - Ohio : McGraw-Hill, c1990. - xvi, 157 pages : illustrations ; 27 cm
084451425x
Arithmetic--Study and teaching.
Mathematics--study and teaching.
QC92 / R39 1990