TY  - BOOK
AU  - Shadish, William R.
AU  - Cook, Thomas D.
AU  - Campbell, Donald T.
TI  - Experimental and quasi-experimental designs for generalized causal inference
SN  - 0395615569
AV  - BD591 .S48 2002 C.1
CY  - Australia
PB  - Wadsworth Cengage Learning
KW  - Causation
KW  - Experiments
ER  -