Công nhân khoan giếng dầu khí và dịch vụ liên quan
Oil and gas well drilling and related workers and services operators
Lưu trữ Nghề nghiệp
School occupations.
Có 516 mục trong bộ sưu tập này.
Oil and gas well drilling and related workers and services operators
Managers in natural resources production and fishing
Chain saw and skidder operators
Railway yard and track maintenance workers
Managers in agriculture
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