"Watts, M." <br/><br/>
Worked example in data response questions for/ 
"M, Watts" 
 - 2nd 
 - London:  "HEB,"  1982 
 - 107p. 
<br/><br/><label>ISBN: </label>0-435-33950-8 
<br/><br/><label>Subjects--Index Terms: </label>economics 
<br/><br/><label>Dewey Class. No.: </label>330  / WAT