TY  - GEN
TY  - GEN
T1  - Quasi-experimentation : design & analysis issues for field settings
A1  - Cook, Thomas D.
A2  - Campbell, Donald T.
LA  - eng
PP  - Chicago, Ill. ; Boston, Mass.
PB  - Rand McNally ; Houghton Mifflin
YR  - 1979
UL  - https://kansalliskirjasto.finna.fi/Record/helka.993369043506253
SN  - 0-528-68694-1 pehmeäkantinen
SN  - 0-395-30790-2 Houghton Mifflin, US
KW  - Social sciences : Research.
KW  - Social sciences : Fieldwork.
ER  -