[A SEARCH FOR ARBORVIRUSES PREVIOUSLY NOT KNOWN TO OCCUR IN POLAND. V. A PRELIMINARY STUDY OF THE ROUTES OF INVASION OF NEW ARBORVIRUSES IN THIS COUNTRY].
D000818:Animals; D001102:Arbovirus Infections; D001715:Bird Diseases; D004813:Epidemiology; D011044:Poland; D012106:Research; D012698:Serologic Tests
ARBOVIRUS INFECTIONS; BIRD DISEASES; EPIDEMIOLOGY; EXPERIMENTAL LAB STUDY; POLAND; SERODIAGNOSIS
POSZUKIWANIE NIE SPOTYKANYCH DOTYCHCZAS W POLSCE ROR WIRUS'OW. V. WST EPNE BADANIE DR'OG PRZENIKANIA NOWYCH ARBOR WIRUS'OW DO KRAJU.