APA-referens (7:e uppl.)

Não informado. (1952). Chemical and Process Engineering. Leonard Hill Technical Group.

Chicago-referens (17:e uppl.)

Não informado. Chemical and Process Engineering. London: Leonard Hill Technical Group, 1952.

MLA-referens (8:e uppl.)

Não informado. Chemical and Process Engineering. Leonard Hill Technical Group, 1952.

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