TY  - BOOK
AU  - Jones, A. L.
AU  - Aldwinckle, H.S.
TI  - Compendium of apple and pear diseases
T2  - Disease compendium series
U1  - 634.11 
PY  - 1990///
CY  - St. Paul, Minn.
PB  - The American Phytopathological Society
KW  - Manzana
KW  - Enfermedades
KW  - Pera
ER  -