Chemistry of pulp and paper making . Plate 19 Yellow Birch {Betula liitca) Magnification 100 diameters. Photographed byBureau of Plate 20 Beech (Fagus atropunicea) ^Magnification 100 diameters. Photographed byBureau of Standards.

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Size: 1578px × 1584px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No

Keywords: ., bookcentury1900, bookdecade1920, bookpublishernewyo, bookyear1920