[Letters to the editor: fowl pox-diphtheria].
D000818:Animals; D002645:Chickens; D010856:Columbidae; D004165:Diphtheria / Q000517:prevention & control / Q000662:veterinary*; D005586:Fowlpox / Q000517:prevention & control*; D011201:Poultry Diseases / Q000517:prevention & control*; D014586:USSR
Nam pishut: ospy-difterita ptits.