Harris, N. (2009). Rourke's World of Science ENCYCLOPEDIA: Volume 5 - Chemistry. Rourke Publishing.
Chicago-viite (17. p.)Harris, Nancy. Rourke's World of Science ENCYCLOPEDIA: Volume 5 - Chemistry. Rourke Publishing, 2009.
MLA-viite (8. p.)Harris, Nancy. Rourke's World of Science ENCYCLOPEDIA: Volume 5 - Chemistry. Rourke Publishing, 2009.
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