TY  - BOOK
AU  - Griffiths, S.R..
AU  - Downes, L.W..
TI  - Educational Statistics for Beginners
U1  - 371 
PY  - 1969///
CY  - London
PB  - Methuen and Co. Ltd.
KW  - Education
KW  - Educational Statistics
KW  - G-Education
ER  -