Mathot, G.B <br/><br/>
A Handbook for teachers of multi-grade classes; volume two :  Improving performarce at the primary level / 
G.B. Mathot; Edited by June Cezair Wallace; Hope Mc Nish; John Allen. 
 - Paris: UNESCO, 2001.  UNESCO,  2001. 
 - 66 p. ;  il. 
<br/><br/><label>ISBN: </label>976639010X 
<br/><br/><label>No. de Clasificación Universal Decimal: </label>373.3 =20 "2001" MAT Vol.2.