TY  - GEN
A1  - Strassner, C
A1  - Roehl, R.
T1  - Organic Certification of Hotels, Restaurants and Catering in Germany. Veranstaltung: 1st Nordic Organic Conference, Göteborg, Schweden, 18.-20.05.2009
Y1  - 2009
UR  - https://www.hb.fh-muenster.de/opus4/frontdoor/index/index/docId/4253
ER  -