TY  - BOOK
AU  - Hildebrand, E.M.
AU  - I. Heinicke, A.J.
TI  - Incidencia of fire blight in young apple trees in relation to orchard practices
CY  - Ithaca, N.Y.
PB  -  Cornell University
KW  - Manzana
KW  -  enfermedades
ER  -