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PDF Standards BS 3543:1973

Specification for agricultural baler twines for automatic pick-up balers and similar machines. Polypropylene fibrillated film twine
standard by BSI Group, 10/03/1973

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PDF Standards BS 4432-3:1975

Methods for determining optical properties of pulp, paper and board. Determination of opacity (paper backing) of paper and board by the diffuse reflectance method
standard by BSI Group, 08/29/1975

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