Block 7 Modelling Relationships In Data  social science a third level course 

 -  the open university press  1979 
 - 128p.  ill, 
<br/><br/><label>ISBN: </label>0335074421 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Modelling relationship in data,social research
<br/><br/><label>Dewey Class. No.: </label>300.212  / MOD