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Estimating the economic life of forest machinery using the cumulative cost model and cost minimization model in Iranian Caspian forests

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Figure

Table. 1. Specifications of Timberjack 450C (Timberjack, Canada) and HSM 904 skidders (HSM, Germany)
Table 2. Calculated costs for Timberjack 450C (Timberjack, Canada)
Table. 4. Cumulative operating hours, the ownership, total cost and average cumulative cost per year for Timberjack 450C (Timberjack, Canada) and HSM 904 (HSM, Germany)
Table 5. Models for estimating the operating costs of HSM 904 (HSM, Germany)

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