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3
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Methods of teaching librarianship / Josefa E. Sabor ; with an introductory study by Ricardo Nassif.
- 020.711 S117
- Sabor, Josefa Emilia.
- UNESCO,
- c1969.
- Paris :
-
The Spanish educational reform and lifelong education / Ricardo Díez Hochleitner, Joaquín Tena Artigas, Marcelino García Cuerpo ; a study prepared for the Unesco Institute for Education in collaboration with the International Educational Reporting Service.
- 370.946 D532
- Díez Hochleitner, Ricardo.
- UNESCO,
- 1978.
- Paris :
-
The Palawan biosphere reserve, Philippines / by Ricardo M. Sandalo, Teodoro Baltazar.
- UNESCO,
- 1997.
- Paris :