TY  - BOOK
AU  - Valleau, W. D.
AU  - Diachun, Stephen
AU  - Johnson, E.M. 
TI  - Tobacco diseases
CY  - Lexington, Ky
PB  -  University of Kentuchy. Agricultural Experiment Station
KW  - Tabaco
KW  -  enfermedades
ER  -