TY  - BOOK
AU  - Campbell,Donald Thomas
AU  - Stanley,Julian C.
AU  - Gage,N.L.
TI  - Experimental and quasi-experimental designs for research
U1  - 300.184 
PY  - 1963///
CY  - Chicago
PB  - McNally
KW  - Experimental design
N1  - "Originally appeared in N. L. Gage (editor), Handbook of research on teaching."
ER  -