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Dreifelderwirtschaft f =
agr.	three-course system
agric.	three-course cropping; three-field rotation; three-year field system; three-year rotation
agric., construct.	three-field system
archaeol.	open field system
econ., agric.	three-course rotation; three-yearly crop rotation; three-yearly crop rotation system
nat.res.	strip cropping (against soil erosion)