Kalton, Graham <br/><br/>
Survey methods in social investigation / 
by Sir Claus Moser and Graham Kalton. 
 - 2a ed. 
 - London :  Heinemann Educational Books,  1971 (1979 impr.). 
 - 555 p. 
<br/><br/> "With supplementary bibliography, 1979" 
<br/><br/><label>ISBN: </label>0435826042 
<br/><br/><label>Encabezamiento--Tema: </label><br/>Ciencias sociales--Investigación