Educational cost analysis in action : case studies for planners /
An IIEP research project directed by Philip H. Coombs and Jaques Hallak.
- París : UNESCO, 1972.
- 3 v. : fot.
37.014. 543=20 EDU VOL.I 37.014. 543=20 EDU VOL.II 37.014. 543=20 EDU VOL.III