N. Feld

发表

T. Hald, H. Korsgaard, J. Mygind, 2008, Epidemiology and Infection.

J. Nielsen, F. Bager, J. Mousing, 1997, Preventive veterinary medicine.

P. Qvist, P. Ahrens, N. Feld, 1992, Veterinary microbiology.