Harder, Theodor. <br/><br/>
Introduction to mathematical models in market and opinion research :  with practical applications, computing procedures, and estimates of computing requirements /  (print resources) 
by Theodor Harder ; [translated from the German by Peter H. Friedlander and Eva H. Friedlander] 
 - Dordrecht :  Reidel,  c1969 
 - ix, 194 p. ;  23 cm 
<br/><br/><label>Source: </label>B-5755 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing--Mathematical models<br/>Public opinion polls
<br/><br/><label>LC Class. No.: </label>QA76  / .H37  1969