TY  - BOOK
AU  - Pidgeon, Douglas and Yates, Alfred
TI  - An introduction to educational measurement
SN  - 071006247
U1  - 371.26 
PY  - 1971///
CY  - New York
PB  - ; Routledge And Kegan Paul
KW  - Education
KW  - Educational Measurement
ER  -