TY  - BOOK
AU  - Cook,Thomas D.
AU  - Campbell,Donald T.
TI  - Quasi-experimentation : Design & Analysis Issues for Field Settings
SN  - 0528620533
U1  - 519.54 
PY  - 1979///
CY  - Chicago
PB  - Rand McNally College Pub. Co.
KW  - Social sciences
N1  - Includes index
ER  -