Luterbacher, H. <br/><br/>
Cenozoic planktonic foraminiferal zonation and characteristics of index forms  Paleontological contributions 

 - 163 - 425 
 - International Geological Congress - Jaarverslagen of the Twenty-Third Session Czechoslovakia 1968 .
<br/><br/><label>Index Terms--Genre/Form: </label>--Conferences - Meetings