TY  - SER
AU  - Costa,A.T.
AU  - Nunes,W.M.de C.
AU  - Zanutto,C.A.
AU  - Muller,G.W.
TI  - Stability of Citrus tristeza virus protective isolates in field conditions
KW  - LARANJA
KW  - VIRUS
KW  - POLIMORFISMO
ER  -