Jan P. Norbye 
Wankel engine : Design development application 
 - Philadelphia  Chilton Book Co  1971 
 - 519p 
Jan P. Norbye: Wankel engine : Design development application.  Philadelphia.  Chilton Book Co, 1971. 0-8019-5591-2--(629.2503NOR)   
ENGLISH 
0-8019-5591-2 
629.2503  / NOR