@inproceedings{1037746, title = "Comenius logo: environment for teachers and environment for learners", author = "Blaho, Andrej", year = "1993", pages = "1-11", publisher = "Εκπαιδευτήρια Δούκας", booktitle = "Logo-like learning environments:reflection and prospects. proceedings of the fourth European Logo Conference, University of Athens, Department of Informatics, 28-31 August 1993, Athens Greece" }