Perry, J.S. Riviere, J.W.M. Lefevre, J.M. <br/><br/>
Understanding our own planet  an overview of major international scientific activities 

 - International Council of Scientific Unions  Paris 
 - 36p. 
 - Earth system Global observation systems 
<br/><br/><label>Nat. Bib. No.: </label>5569 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>525 PER 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy
<br/><br/><label>Universal Decimal Class. No.: </label>525