TY  - BOOK
AU  - McKNIGHT Patrick E
TI  - Missing data:  A gentle introduction   
T2  - Methodology in the Social Sciences
SN  - 9781593853938
U1  - Yb4, P7 
PY  - 2007///
CY  - New York
PB  - Guilford Press        
KW  - Economics
ER  -