Bowen, Earl K. <br/><br/>
Mathematics, with applications in management and economics / 
Earl K. Bowen. 
 - 5th ed. 
 - Homewood, Ill. :  Georgetown, Ont. :  R. D. Irwin ;  Irwin-Dorsey,  1980. 
 - xxiii, 962 p. :  ill. ;  24 cm. 
 - The Irwin series in quantitative analysis for business .