TY  - BOOK
AU  - Bickman, Leonard(ed)
TI  - Research design: Donald campbell's legacy
SN  - 761910867
CY  - New Delhi
KW  - Campbell, Donald Thomas
KW  - Evaluation research (social action programmes)
KW  - Experimental design
KW  - Social sciences
KW  - Social sciences-research
KW  - Social sciences-research methodology
ER  -