Habison, Peter <br/><br/>
Karl Schwarzschild's investigations of 'out-of-focus photometry' between 1897 and 1899 at Kuffner Observatory Wien 

 - Thun und Frankfurt am Main  Verlag Harri Deutsch  2000 
 - 11 Seiten 
 - Acta Historica Astronomiae .
<br/><br/><label>ISSN: </label>1422-8521 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PHOTOGRAPHISCHE ASTROMETRIE<br/>PHOTOELEKTRISCHE PHOTOMETRIE<br/>ASTROGRAPHISCHE KATALOGE
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Wien