Douglas, Lind A 
Statistical techniques in business of economics / 
Lind A Douglas and Robert D Mason 
 - 7th ed. 
 - Boston :  Irwin,  c1990. 
 - XXVII , 91 p. : 
 Includes index. 
0256076960 
Social sciences  statistical methods
Economics statistical methods
Statistics
M411s  / . 1990 
519.5