Lang, Kenneth R.. <br/><br/>
A source book in astronomy and astrophycs,1900-1975 /  

 - 1st.Edn. /  
 - Cambridge :   Harvard University Press. 
 - xx,922p :  
<br/><br/><label>ISBN: </label>0-674-82200-5 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics 
<br/><br/><label>Dewey Class. No.: </label>B9:6  / L9