TY  - BOOK
AU  - Mills, W. R.
AU  - Niederhauser, John S.
TI  - Observations on races of Phytophthora infestans in Mexico
KW  - Papa
KW  - Plagas
KW  - Phytophthora infestans
N1  - Sobretiro de: Phytopathology 43 (8):454-455, 1953
ER  -