Foerster, Heinz Von etc. <br/><br/>
Purposive systems : proceedings of the first annual symposium of the American society for Cybernetics 

 - New York  Spartan Books  1968 
 - 16,179p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>PXp73
<br/><br/><label>Dewey Class. No.: </label>PXp73  / J8