Tyrrell, J. A. <br/><br/>
Generalized Clifford parallelism / 
J. A. Tyrrell and J. G. Semple 
 - Cambridge :  The University Press,  1971 
 - 140 p. ;  23 cm. 
 - Cambridge tracts in mathematics and mathematical physics ;  no. 61 .
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0521080428 :  PND 3.60 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geometry, Projective<br/>Parallels (Geometry)
<br/><br/><label>Dewey Class. No.: </label>516.57