Whitman, R. B. Tractor Principles The Action, Mechanism, Handling, Care, Maintenance and Repair of the Gas Engine Tractor.
Chicago-viite (17. p.)Whitman, Roger B. Tractor Principles The Action, Mechanism, Handling, Care, Maintenance and Repair of the Gas Engine Tractor.
MLA-viite (9. p.)Whitman, Roger B. Tractor Principles The Action, Mechanism, Handling, Care, Maintenance and Repair of the Gas Engine Tractor.
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