Shier, Gloria Cumagun Bulan <br/><br/>
Correlates of proportional reasoning among adolescents in the Philippines / 
by Gloria Cumagun Bulan Shier 
 - Minneapolis :  University of Minnesota Press,  1986 
 - xii, 214 p. :  ill. ;  21 cm. 
<br/><br/>Ph.D Thesis - University of Minnesota, 1986 
<br/><br/>Bibliography : p. 161-173 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reasoning<br/>Education psychology