TY  - BOOK
AU  - Lewis,D.G.
TI  - Statistical methods in education 
U1  - 370.18 
PY  - 1967///.
CY  - London : 
PB  - University of London Pree Limited, 
KW  - Education-research methodlogy
KW  - Education-statistical methods
N1  - Includes Index.
ER  -