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Biological warfare - Wikipedia
Biological warfare and bioterrorism: a historical review
History of biological warfare - Wikipedia
Biological weapons and bioterrorism: Past, present, and future
Biowarfare, bioterrorism and biocrime: A historical overview on ...
The history of biological warfare - PMC - National Center for ...
A Short History of Biological Warfare: From Pre-History to the …
United States biological weapons program - Wikipedia
Biological weapon - Warfare, History, Pathogens | Britannica