TY  - BK
AU  - Helm,J.L.
AU  - Riveland,N.
TI  - Winter wheat production in North Dakota
T2  - NDSU Extension Service [publication] - North Dakota State University (USA).
U1  - 93-063099 
PY  - 1992///
KW  - America
KW  - Crop husbandry
KW  - Crops
KW  - AGROVOC
KW  - Cultivation
KW  - Gramineae
KW  - North America
KW  - North central states usa
KW  - Northern plains states usa
KW  - Pest control
KW  - Production
KW  - Taxa
KW  - USA
KW  - Triticum
ER  -