Johansson, Erik. <br/><br/>
Determinations of stellar parallax from photographs taken at the Astronomical observatory :  Upsala, in the years 1924-1935 / 
by E rik Johansson. 
 - Uppsala :  Almquist & Wiksells boktryckeri-a.-b.,  1935. 
 - 53 p. :  ill. ;  25 cm. 
 - Uppsala universitets ärsskrift 1935 ;  15 .
<br/><br/> Series title also in French. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Parallax--Stars.
<br/><br/><label>Dewey Class. No.: </label>P 523.81 J 64