Antartica in the international geophysical year   : Based on a symposium on the Antartic 

 - Baltimore:  American Geophysical Union of the National Academy of Sciences  1956 
 - 133p. :   il; 24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geología Ciencias Afines a la Geología