Plate tectonics: the puzzle of the continents/ 
Scott Resources 
 - 1 dvd (18 mins.):  sd., color;  4 3/4 in. 
<br/><br/><label>Subjects--Topical Terms: </label>--PLATE TECTONICS
<br/><br/><label>Dewey Class. No.: </label>551.136/P69