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On this page, you can select 「MainGroup」 or 「Facet」 in D21D. |
HB:Handbook | ||||
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Select the desired 「MainGroup」 or 「facet」 etc. |
CC:Concordance | ||||
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Methods of beating or refining; Beaters of the Hollander type (knotter screens D21F) | HB | CC | 4L055 | |
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Purification of the pulp suspension by mechanical means; Apparatus therefor (centrifuges, cyclones B04) | HB | CC | 4L055 | |
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Subject matter not provided for in other groups of this subclass [8] | HB | CC | 4L055 | |