TY  - TH
AU  - Schulthess,U.
TI  - The impact of vertisol management systems on wheat production in the Ethiopian highlands
U1  - Look under author name 
PY  - 1992///
CY  - Zurich (Switzerland)
PB  - Swiss Federal Institute of Technology, 
KW  - Crop management
KW  - AGROVOC
KW  - Ethiopia
KW  - Highlands
KW  - Injurious factors
KW  - Plant production
KW  - Vertisols
KW  - Wheat
N1  - Thesis (Ph. D) Natural Sciences
ER  -