TY  - BOOK
AU  -  Lewis,D.G.
TI  -  Experimental design in education / 
SN  -  034007342X
U1  -  370.78 
PY  - 1968///
CY  -  London : 
PB  -  University of London Press, 
KW  -  Educational statistics
N1  -  Includes bibliographical references
ER  -