Nelson, V. M. (1993). Instructor's manual/test bank to accompany Pelczar/Chan/Krieg microbiology: Concepts and applications. McGraw-Hill, Inc.
Lua i Stíl Chicago (17ú heag.)Nelson, Valerie M. Instructor's Manual/test Bank to Accompany Pelczar/Chan/Krieg Microbiology: Concepts and Applications. New York: McGraw-Hill, Inc, 1993.
Lua MLA (9ú heag.)Nelson, Valerie M. Instructor's Manual/test Bank to Accompany Pelczar/Chan/Krieg Microbiology: Concepts and Applications. McGraw-Hill, Inc, 1993.
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