British standards instituion (BSI). (1971). BS [1000] [[621.5]]: [1971] & [3035] Pneumatic energy, Machinery. British Standard Institution.
Παραπομπή Chicago StyleBritish standards instituion (BSI). BS [1000] [[621.5]]: [1971] & [3035] Pneumatic Energy, Machinery. London: British Standard Institution, 1971.
Παραπομπή MLABritish standards instituion (BSI). BS [1000] [[621.5]]: [1971] & [3035] Pneumatic Energy, Machinery. British Standard Institution, 1971.
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