TY  - BOOK
AU  - Stefferud, Alfred.
TI  - Plant Diseases : the yearbook of Agriculture / 
U1  - 632.3 
PY  - 1953///
CY  - .- Washington
PB  - : United States Department of Agriculture
KW  - Technology (Applied Sciences)
KW  - Agriculture and Related Tehnologies
KW  - Plant Diseases
KW  - Yearbook
ER  -