Ackermann, W.  1896- <br/><br/>
Solvable cases of the decision problem / 
W. Ackermann 
 - Amsterdam :  North-Holland Pub. Co.,  c1954 [ printing 1962] 
 - 114 p. ;  22 cm. 
<br/><br/>Includes bibliography. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Logic, Symbolic and mathematical.
<br/><br/><label>Dewey Class. No.: </label>51.3  / ACS 1962