Pietrainki, Zbigniew <br/><br/>
Pychology of efficient thinking / 
by Zbigniew Pietrainki 
 - 1st ed. 
 - Oxford :  Peragamon press,  1969. 
 - 202p. : 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Efficient thinking
<br/><br/><label>Dewey Class. No.: </label>353.9  / PIE.P