Filtern nach: Contributor sim Susan Mejia Entfernen Zwang Contributor sim: Susan Mejia Schöpfer Jason Scott Ballard Entfernen Zwang Schöpfer: Jason Scott Ballard Human readable type sim Open Educational Resource Entfernen Zwang Human readable type sim: Open Educational Resource Ressourcentyp Textbook Entfernen Zwang Ressourcentyp: Textbook