TY  - BOOK
AU  - Hopperstead, S.  L
AU  - Goowin, M. W.  Kadow, K. J.
TI  - Bitter rot of apples and its control in Delaware
CY  - Newark, Delaware
PB  -  Agricultural Experiment Station
KW  - Manzana
KW  -  Enfermedades  Fungicidas  Mancha amarga
ER  -