TY  - BOOK
AU  - Mehrens William A Ed.
AU  -  Ebel Robert L Ed.
TI  - Principles of educational and psychological measurement : A book of selected readings
T2  - Rand McNally education
PY  - 1967///
CY  - Chicago, USA
PB  - Rand McNally and Company
KW  - Educational - Tests and Measurement
ER  -