Wittmann, G. (Günther), 1926-

Aujeszky's disease : a seminar in the animal pathology series of the CEC Programme of Coordination of Agricultural Research, held at Tübingen, Federal Republic of Germany, June 9-10, 1981 sponsored by the Commission of the European Communities, Directorate-General for Agriculture, Coordination of Agricultural Research / edited by G. Wittmann, S.A. Hall.