Spreading oceans  [motion picture] / 
produced by BBC-TV, Open University. 
 - San Diego, Calif. :  Media Guild,  1981. 
 - 1 film reel (24 min.) :  sd., col. ;  16 mm. +  1 guide. 
<br/><br/> Cataloging information taken from guide. 
<br/><br/> Presents evidence supporting the concept of sea-floor spreading and the movement and distribution of techtonic plates. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sea-floor spreading.