Research studies constituting the U.S. contribution to the Internati onal Biological Programme. 

 - Washington, D.C. :    Natioal Academy of Sciences,    n.d. 
 - 79 p. ;    28 cm. 
<br/><br/>  Report No.3 of the U.S. of The U.S. National Committee for Internati onal Biological Program. Part 1 and 2 
<br/><br/><label>Subjects--Corporate Names: </label><br/> International Biological Programme.