SIMETRIA, CONGRUENCIA Y SEMEJANZA 18  
TR. FEDERICO VELASCO COBA. 
 - MEXICO    TRILLAS 
 - 62 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>1. SIMETRIA.
<br/><br/><label>LC Class. No.: </label>QA241 N271s N°18