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Energy Conservation in Transport New Engines and FlywheelsH. Ehringer, G. Hoyaux, P. PilavachiInbunden, 19831 419 kr
Energy Conserve in Industry — Combustion, Heat Recovery and Rankine Cycle MachinesH. Ehringer, G. Hoyaux, P. PilavachiHäftad, 20102 129 kr
Energy Conservation in Buildings Heating, Ventilation and InsulationH. Ehringer, G. Hoyaux, P. ZegersInbunden, 19832 829 kr