Seares, Kapteyn, J. C. <br/><br/>
Mount wilson catalogue of photographic magnititudes in selected areas 
Kapteyn, J. C Seares and P. J. Van Rhijn                 
 - Washington  Carnegie Institution of Washington  1930 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Magnititudes<br/>photography