North, H. B. (1981). Commercial food patents, U.S. 1980. AVI.
Chicago Style (17th ed.) CitationNorth, Hallie B. Commercial Food Patents, U.S. 1980. Westport, Conn: AVI, 1981.
MLA citiranjeNorth, Hallie B. Commercial Food Patents, U.S. 1980. AVI, 1981.
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