Commerce Vol. XCL /  Textual Documents 
No Author. 
 - 1st ed. / 
 - Sl :  Sn ,  1970. 
 - 992p. ;  32 cm.. 
<br/><br/><label>Subjects--Index Terms: </label>BV-Commerce Journal 
<br/><br/><label>Dewey Class. No.: </label>070  / COM