Wijmstra, T.A. <br/><br/>
Palynological data on the history of tropical savannas in nothern South America 

 - Montreal  McGill University, Department of Geography  1967 
 - 71-90p.  plates, ill. maps  27 cm 
 - McGill University Savanna Research Project. Savanna research series .
 - Title .
<br/><br/> Cover title : South American savannas : comparative studies, Colombia and Guyana. - Reprinted from Leidse Geological Mededelingen, vol. 38, 1966, p. 71-90 
<br/><br/><label>Dewey Class. No.: </label>Pam 581.5  / WI Wij