TY  - BOOK
AU  - Shadish,William R.
AU  - Cook,Thomas D.
AU  - Campbell,Donald Thomas
TI  - Experimental and quasi-experimental designs for generalized causal inference
SN  - 0395615569 (pbk.)
PY  - 2002///
CY  - Belmont, CA.
PB  - Houghton Mifflin
KW  - Causation
KW  - Experiments
N1  - Includes bibliographical references (p. 514-591) and indexes
UR  - http://www.loc.gov/catdir/enhancements/fy1105/2001131551-t.html.
ER  -