Experientia, Vol.29 (7-12) 

 - Basel :  Birka. Verlag,  1973 
 - 781-1588 p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Experientia (Journal)
<br/><br/><label>Universal Decimal Class. No.: </label>EXP-29  / (7-12)