Spear ,Mary Eleanor  <br/><br/>
Practical charting Techniques  
/ by Mary Eleanor Spear  
 - New york:   McGraw-Hill,   1969. 
 - xxii,394p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>City Wage Earners <br/>Computer Science<br/>Domestic exports<br/>World Wars 
<br/><br/><label>Dewey Class. No.: </label>001.4226  / SPE/P