TY  - BOOK
AU  - Stakman, Elvin Charles.
TI  - Identification of physiologic races of Puccinia graminis tritici
PY  - 1944///
CY  - Washington
PB  - Bureau of Entomology and Plant Quarantine
KW  - Puccinia graminis
KW  - Roya del trigo
KW  - Trigo
KW  - Variedades
ER  -