Colour-factor mathematics : the sixth year /
Thompson, Henry Arthur
Colour-factor mathematics : the sixth year / by H. A. Thompson - London : Heinemann Educational, 1965 - 138 p. ; 22 cm.
Mathematics--Study and teaching (Primary)
Colour-factor mathematics : the sixth year / by H. A. Thompson - London : Heinemann Educational, 1965 - 138 p. ; 22 cm.
Mathematics--Study and teaching (Primary)
