TY  - BOOK
AU  - Rosenbaum Paul R
TI  - Design of observational studies
SN  - 978-1-4419-1212-1
U1  - 000SA.2 
PY  - 2010///
CY  - New York
PB  - Springer-Verlag
KW  - Analysis of variance
KW  - Experimental design
ER  -