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Normas BSI – AENOR
BS 3060:1958

BS 3060:1958

Specification for school chalks

Fecha Anulación:
1991-07-15 /Withdrawn
Comité:
Keywords:
Weight (mass), Dimensions, Chalks, Size, Strength of materials, Educational equipment, Length, Breaking load, Stationery, Packaging, Hardness, Diameter
129,17
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