[Vaccination against smallpox in youth labor camps].
D035843:Biomedical Research; D011044:Poland; D012899:Smallpox / Q000517:prevention & control*; D014611:Vaccination; D014612:Vaccines
D014612:Vaccines
SMALLPOX/prevention and control; VACCINES AND VACCINATION
Szczepienia przeciwospowe w brygadach młod1ziezowych.