TY  - BOOK
AU  - Kommedahl, Thor., ed.
TI  - Challenging problems in plant health
U1  - 632.9(082.2) M3 
PY  - 1983///
CY  - Minnesota
PB  - APS
KW  - Williams, Paul H., joint ed.
KW  - Edited  Thor Kommedahl and Paul H.Williams.
KW  - Plant Quarantine,Plant protection
ER  -