Major features of the Earth's surface :  Continental movement, sea-floor spreading and plate tectonics. 

 - [Bletchley, England :  Open University Press,  c1971] 
 - Science Foundation course units 24 and 25 .
<br/><br/> Cover title. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geomorphology.<br/>Geology, Structural.