Não informado. (1989). The Engineering index bioengineering and biotechnology abstracts. Engineering Information.
Chicago-referens (17:e uppl.)Não informado. The Engineering Index Bioengineering and Biotechnology Abstracts. New York: Engineering Information, 1989.
MLA-referens (8:e uppl.)Não informado. The Engineering Index Bioengineering and Biotechnology Abstracts. Engineering Information, 1989.
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