Polon (David D) <br/><br/>
Dictionary of industrial engineering abbreviations    Signs and symbols 

 -  1967 
<br/><br/><label>Standard No.: </label>67606 
<br/><br/><label>Source: </label> Dictionary 
<br/><br/><label>Subjects--Topical Terms: </label><br/>ECONOMICS
<br/><br/><label>Dewey Class. No.: </label>X9D:(P111:181)k, K7