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источник сырья stresses
busin.	source of raw materials (comment by ART Vancouver: here's a good example: For: Great Britain, Canada was a source of raw materials, particularly lumber.)
географический источник сырья
gas.proc.	feedstock source (для газификации)

источник сырья: 9 phrases in 6 subjects

Construction	1
Diplomacy	1
Economy	1
Food industry	1
General	3
Makarov	2