TY  - BOOK
AU  -  Christensen Larry B.
TI  - Experimental methodology
SN  - 0205069606
U1  - 152 
PY  - 1980///
CY  - Boston
PB  - Allyn and Bacon
KW  - Research Design
KW  - Psychology, Experimental
N2  -  Psychology, Experimental, Research Design
ER  -