Simon, Wilhelm <br/><br/>
Zeitmarken der Erde  Grund und Grenze geologischer Forschung 

 - Braunschweig  F.R. Vieweg  1948 
 - 232 p.  illus., fold. plate  21 cm. 
 - Die Wissenschaft  Bd. 98 .
 - Wissenschaft (Braunschweig, Germany) ;  Bd. 98. .
<br/><br/>Bibliographical footnotes 
<br/><br/><label>LCCN: </label>gs 48000309  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic<br/>Paleontology
<br/><br/><label>LC Class. No.: </label>QE651  / .S5