TY  - BOOK
AU  - Beukema,H.P.
AU  - Zaag,D.E.Van der
TI  - Introduction to potato production
SN  - 9022009637
PY  - 1990///
CY  - Wageningen, The Netherlands
PB  - Pudoc
KW  - Potatoes production
KW  - Potatoes
KW  - Disease and pest resistance
ER  -