|   | by Ottar HellevikHardcover 
 
 
 ISBN: 978-0-04-312020-0 ISBN-10: 0-04-312020-2 HarperCollins Publishers Ltd · 1984 | 
| See also: | ||
| 1988 | Paperback | Introduction to Causal Analysis: Exploring Survey Data by Crosstabulation (Contemporary Social Research Series, 9) |