Bookbinding and the Conservation of Books
A Dictionary of Descriptive Terminology

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directory paper

A lightweight printing paper made with a substantial proportion of mechanical wood pulp. The balance of the pulp is usually unbleached sulfite or semi-bleached sulfate pulp, although the paper is also made from deinked paper stock plus chemical wood pulp. Its essential characteristics are uniformity of basis weight. opacity, strength, and a finish suitable for high speed printing. Permanence is not considered to be an essential property. Usual basis weights are 18 to 28 pounds (4 x 36�). It is used main1y for printing telephone directories, city directories, and the like. (17 )




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