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2. Scourge: The Once and Future Threat of Smallpox;JB Tucker,2001
3. Biohazard : the chilling true story of the largest covert biological weapons program in the world, told from the inside by the man who ran it;K Alibek,1999
4. The Russian biological weapons program: vanished or disappeared?;D Shoham;Crit Rev Microbiol,2004
5. The demon in the freezer: a true story;R Preston,2002