Hellevik, Ottar. <br/><br/>
Introduction to causal analysis :  exploring survey data by crosstabulation / 
Ottar Hellevik. 
 - London :  George Allen & Unwin,  1984. 
 - 211 p. ;  22 cm. 
 - Contemporary social research series ;  9 .
 - Contemporary social research series ;  9 .
<br/><br/> Includes index. 
<br/><br/>Bibliography : p. 206-207. 
<br/><br/><label>ISBN: </label>0043120199  cased 0043120202  pbk. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Social sciences--Research--Addresses, essays, lectures<br/>Social surveys--Addresses, essays, lectures