TY  - BOOK
AU  - IMBENS Guido W
AU  -  RUBIN Donald B
TI  - Causal inference for statistics, social and biomedical sciences:  An introduction   
SN  - 9780521885881
U1  - Sigma b4, Q5 
PY  - 2015///
CY  - Cambridge
PB  - Cambridge University Press        
KW  - Economics
ER  -