Quasi - experimentation : design and analysis issues for field settings
Cook, Thomas D
Quasi - experimentation : design and analysis issues for field settings - Chicago Pand McNally College Pub 1979 - xii,405
311.24 C77
Quasi - experimentation : design and analysis issues for field settings - Chicago Pand McNally College Pub 1979 - xii,405
311.24 C77
