TY  - BOOK
AU  - Pidgeon,Douglas A.
AU  - Yates,Alfred
TI  - An introduction to educational measurement
SN  - 0710062478
U1  - 371.26 
PY  - 1969///
CY  - London
PB  - Routledge & Kegan Paul
KW  - Educational tests and measurements
ER  -