By Weissenberger Christian   Müller David   Beranek-Chiu Jan   Neumann Marcus   Jonassen Sinje   Bartelt Susanne   Schulz Stefan   Witucki Gerlo   Henne Karl   Geissler Michael   Fogel Joshua   in International Journal of Colorectal Disease

ISSN:0179-1958|21|7|615-624

Springer Publishing Company ‎(2006)‎

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By Fettig Joachim   Henne Karl-Heinz   Maâ-–meyer Klaus   in International Journal of Sustainability in Higher Education

ISSN:1467-6370|3|1|67-74

Emerald Group Publishing Ltd‎(2002)‎

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