Sheffield, Charles <br/><br/>
Earthwatch, a survey of the world from space 
Charles Sheffield 
 - New York  Macmillan  1981 
 - 160 p.  ill. (some col.)  32 cm. 
<br/><br/> Includes index 
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Earth--Photographs from space
<br/><br/><label>Dewey Class. No.: </label>525  / .022  / 2