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working method
agric.	Arbeitstechnik f
busin.	Arbeitsmethode f; Arbeitsverfahren n
chem.	Arbeitsweise f
coal.	Abbauführung f; Abbauverfahren n; Gewinnungsverfahren n; Abbaumethode n
construct.	Arbeitsgang m

working method: 14 phrases in 6 subjects

Coal	2
Economy	2
General	3
Law	1
Metallurgy	1
Mining	5