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Suomi-venäjä sanakirja Kirja Business. 2009.
Suomi-venäjä sanakirja Kirja Business. 2009.
Recovery boiler — is the part of Kraft process of pulping where chemicals for white liquor are recovered and reformed from black liquor. In the process lignin of the wood, bound in black liquor at this phase, is burned and heat generated. The heat is usually used… … Wikipedia