Cite
MLA Citation
British Standards Institution,. Plastics piping systems. Plastics pipes and fittings. Determination of the opacity.. London : British Standards Institution, 1994. http://access.bl.uk/ark:/81055/vdc_100104437645.0x000001
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British Standards Institution,. Plastics piping systems. Plastics pipes and fittings. Determination of the opacity.. London : British Standards Institution, 1994. http://access.bl.uk/ark:/81055/vdc_100104437645.0x000001