The History of life on earth.  [slide]. 

 - [s.l.,  s.n.,  1975?] 
 - 233 slides :  col. ;  2 x 2 in. 
<br/><br/> In 3 carousels. 
<br/><br/>pt.1. Paleozoic life.--pt.2. Mesozoic life.--pt.3. Cenozoic life. For use in Geology 1510 and 1820. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Paleozoic.<br/>Geology, Stratigraphic--Mesozoic.<br/>Geology, Stratigraphic--Cenozoic.