2nd International Symposium on Onformation Theory : Tsahkadsor, Armenia, USSR 
<label>;</label> Csaki, F. <label>;</label> Petrov, B.N. 
 - Budapest  Akademiai Kiado  1973 
 - 451p.  24 cm. 
<br/><br/>SR 
<br/><br/><label>Dewey Class. No.: </label>519.7  / P