Marketing models: quantitative applications / 
edited by Ralph L. Day. 
 - Scranton :  International Textbook Co.,  1964. 
 - xiv, 671 p. :  ill. 
 - The International series in marketing. .
 - Day, Ralph L. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing--Mathematic models.<br/>Consumer behavior--Mathematic models.