Harder, Theodor <br/><br/>
Introduction to mathematical models in market and opinion research:   With practical applications, computing procedures, and estimates of computing requirements 

 - Dordrecht:   D Reidel Publishing Company,   1969 
 - ix, 194p. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics
<br/><br/><label>Subjects--Index Terms: </label>Forecasting calculations 
<br/><br/><label>Universal Decimal Class. No.: </label>519.28:65.012.1/.2  / K9