Author Affiliations +
GEORG KAPPERUD,1 Olav Rosef,2 Ole Wiggo Rastad,3 Gunnar Lid4
1Norwegian Defence Microbiological Laboratory, National Institute of Public Health, Geitmyrsveien 75, Oslo 4, Norway
2Department of Food Hygiene, Veterinary College of Norway, POB 8146 Oslo dep., Oslo 1, Norway
3Zoological Institute, University of Oslo, POB 1050 Blindern, Oslo 3, Norway
4Zoological Museum, Sars gt. 1, Oslo 5, Norway