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BS

PDF Standards BS 3650:1976

Specification for oil-extended styrene-butadiene rubbers (SRB). Non-pigmented, emulsion polymerized, general purpose types (1700 series)
standard by BSI Group, 09/30/1976

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BS

PDF Standards BS 3680-9B:1981

Methods of measurement of liquid flow in open channels. Water level instruments-Float-operated water level recorders (mechanical and electromechanical)
standard by BSI Group, 12/31/1981

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