TY  - BOOK
AU  - Postlethwaite, T. Neville.,ed.
AU  - Husen, Torsten.,ed.
TI  - International encyclopedia of education: V.7:P-R
SN  - 0080281192
U1  - 370.321 
PY  - 1985///
CY  - Oxford
PB  - Pergamon Press
ER  -