Authors: Grzonka, E Kaulfuss, KH Schliephake, A Pfeifer, F

Citation: E. Grzonka et al., Studies on endoparasitic infection in sheep flocks in Sachsen-Anhalt, TIER UMSCH, 55(12), 2000, pp. 658-662

Authors: Urbaneck, D Grzonka, E Stache, B

Citation: D. Urbaneck et al., Use of flock specific vaccines against footrot of sheep, TIER UMSCH, 53(12), 1998, pp. 754-757