Attenborough, Richard,  1926- <br/><br/>
The invasion of the land  [videorecording]. 

 - Wilmette :  Films Inc.,  1981. 
 - 1 videocassette (U-matic) (58 min.) :  sd., col. ;  3/4 in. 
 - Life on earth [videorecording] ;  no.6 .
<br/><br/> Naturalist David Attenborough explains how marine vertebrates developed legs and lungs and were thus able to move onto the land. He also describes modern day amphibians, such as the salamanders and frogs. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Vertebrates--Evolution.<br/>Marine fauna--Evolution.<br/>Amphibians--Evolution.