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method and device for the implementation of hoehersiedender oeliger substances, such as rueckstaende, tars, asphalte etc., in the dry distillation of solid fuels in kammeroefen or retorts
method and device for the implementation of hoehersiedender oeliger substances, such as rueckstaende, tars, asphalte etc., in the dry distillation of solid fuels in kammeroefen or retorts
