Dyfyniad APA

British Standards Institution. (1966). Sulphate-resisting Portland cement. British Standards Institution.

Dyfyniad Arddull Chicago

British Standards Institution. Sulphate-resisting Portland Cement. London: British Standards Institution, 1966.

Dyfyniad MLA

British Standards Institution. Sulphate-resisting Portland Cement. British Standards Institution, 1966.

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