Electron microscopy of pulp and paper / R.A. Parham.

3 parts ( pages 21-8; 52-8; 2-7) : tables ; 22 cm

Permanence of papers / W.H. Langwell.

26 unnumbered pages : colour illustrations ; 18 x 24 cm

x, 565 pages, 31 pages of plates : illustrations ; 22 cm

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