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Subjects
School Schedules, School week, School hygienePlaces
BulgariaEdition | Availability |
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Sot͡s︡ialno-pedagogicheski i zdravno-khigienni predpostavki za vŭvezhdane na petdnevna uchebna sedmit͡s︡a v novoto ESPU--II i III stepen (UPK)
1985, Nauchnoizsl. in-t po profesionalno obrazovanie pri Ministerstvo na nar. prosveta
in Bulgarian
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November 5, 2020 | Created by MARC Bot | import existing book |