Briel, Johan Kees van den. <br/><br/>
Classificatie der tweedegraadskrommen en -oppervlakken in de niet-Euclidische meetkunde. 

 - Utrecht,  Drukkerij Fa. Schotanus & Jens,  1942. 
 - 91, [3] p.  diagrs.  25 cm. 
<br/><br/> "Stellingen": [2] p. inserted.  "Summary": 1 p. at end. 
<br/><br/>Proefschrift--Utrecht. 
<br/><br/><label>LCCN: </label>af 49001083  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Non-Euclidean.<br/>Curves.<br/>Surfaces.<br/>Conic sections.
<br/><br/><label>LC Class. No.: </label>QA685  / .B88 
<br/><br/><label>Dewey Class. No.: </label>513.81