TY  - BOOK
AU  - Schumann,Gail L.
TI  - Plant diseases: their biology and social impact 
SN  - 0890541167
PY  - 2003///
CY  - Minnesota
PB  - APS Press, The American Phytopathological Society
KW  - Plant diseases and social impacts
N1  - Includes bibliographical references and index
ER  -