Callahan, J. R. (2010). Emerging biological threats: A reference guide. Greenwood Press.
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Chicago-čujuhus (17. p.)
Callahan, Joan R. Emerging Biological Threats: A Reference Guide. Santa Barbara, CA: Greenwood Press, 2010.
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MLA-čujuhus (9. p.)
Callahan, Joan R. Emerging Biological Threats: A Reference Guide. Greenwood Press, 2010.
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