003450000a2200121000450024500770000065000160007765000260009365000090011904100130012870000210014110000210016277300400018310aPapovavirus infection in hand-fed parrots: virus isolation and pathology14aVeterinaria14aEnfermedades animales14aAves0 aInglés1 aCalnek, Bruce W.1 aGraham, David L.1 tAvian Diseases3411q398-410d1993?