Avian leukosis and Marek s disease
Inhalt Karte:517,487 AVIAN Avian leukosis and Marek s disease. Symposium Sofia October 12—14,1970 reports said communications.Editorial boards Z.Mladenov, St. Uedyalkov and N. Sotirov. Sofia 1972 Publishing House of the Bulgarian Academy of Sciences, 8° s. 263, nlb.1,tabl.30.