LEARNING ABOUT MAGNETISM [VIDEOGRABACION]. 

 - 2 
 - MEXICO:   ENCYCLOPAEDIA BRITANNICA  EDUCATIONAL CORP.  1975 
 - 1 VIDEO (VHS) (13M) COL. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>1.CAMPOS MAGNETICOS.<br/>2.ELECTROMAGNETISMO.<br/>3.MOTORES Y GENERADORES.<br/>4.DESVIACIONMAGNETICA.
<br/><br/><label>Dewey Class. No.: </label>C 538 E23