The new open education a program for combining the basics with alternative methods
| Príomhchruthaitheoir: | |
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| Rannpháirtithe: | |
| Formáid: | LEABHAR |
| Foilsithe / Cruthaithe: |
Washington, D.C.
Acropolis Books, Ltd.
c1974.
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| Ábhair: |