Eicholz, Robert E. <br/><br/>
Elementary school mathematics :  book 4 / 
Robert E. Eicholz, Phares G. O'Daffer ; consultants Charles F. Brumfiel, Merril E. Shanks. 
 - Menlo Park (E.U.A.) :  Addison-Wesley,  c1968. 
 - 414 p. :  il. 
 - Elementary school mathematics series .
<br/><br/> "Teacher's edition" 
<br/><br/><label>Encabezamiento--Tema: </label><br/>MATEMATICAS ---ESTUDIO Y ENSEÑANZA (ELEMENTAL) ---ESTADOS UNIDOS