Petrov, A.Z. <br/><br/>
Einstein spaces   
by A.Z. Petrov, tr. by R.F. Kelleher, and tr. ed. by J. Woodrow 
 - Oxford  Pergamon Press  1969 
 - xiii, 411p, incl bibl. & ind. 
<br/><br/><label>LCCN: </label>67-23712 
<br/><br/><label>Dewey Class. No.: </label>512.32  / N69