International cloud album for observers in aircraft 
World Meteorological Organisation                            
 - Switzerland  Geneva World Meteorological Organisation  1956 
 - 32p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Astronomy and Astrophysics Thesaurus<br/>Clouds
<br/><br/><label>Universal Decimal Class. No.: </label>551.576  / INT