Columbia subject headings:
Labor--Religious aspects--Christianity.
Technology--Religious aspects--Christianity.
Work ethic.
Work--Religious aspects--Christianity.
Work.
Working class.
Harvard subject headings:
Industrialization.
Labor--Religious aspects--Christianity
Technology--Religious aspects--Christianity
Work ethic.
Work--Religious aspects--Christianity
Work.
Working class.
Princeton subject headings:
Labor--Religious aspects--Christianity.
Technology--Religious aspects--Christianity.
Work ethic.
Work--Religious aspects--Christianity.
Work.