livre (2) puits (2) temps (durée) (2) société (humaine) (2) participation active (2) marché (2) information (2) histoire (2) éducation (2) niveau d'études (2) public (2) Education (2) Development (2) History (2) Forms (2) Usage (2) Time (2) Reformation (2) Printing (2) Persons (2) Masses (2) Human beings (2) Literacy (2) History (2) Graphic methods (2) Graphic arts (2) Girls (2) German language (2) Education (2) Culture (2)