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The electrical contractor principles of cost-keeping and estimating, wiring and illumination calculations and other technical problems of the business
- "The electrical contractor: principles of cost-keeping and estimating, wiring and illumination calculations and other technical problems of the business"
- "The electrical contractor principles of cost-keeping and estimating, wiring and illumination calculations and other technical problems of the business"@en
- "The Electrical Contractor, etc"@en