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Proliferation threats of the 1990's: hearing before the Committee on Governmental Affairs, United States Senate, One Hundred Third Congress, first session, February 24, 1993
Glenn John Hershel, États-Unis Senate, Committee on governmental affairs | U.S. G.P.O. For sale by the U.S. G.P.O., Supt. of Docs., Congressional Sales Office | 1993
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Global spread of chemical and biological weapons: hearings before the Committee on Governmental Affairs and its Permanent Subcommittee on Investigations, United States Senate, One Hundred First Congress, first session, assessing challenges and responses, February 9, 10, 1989 ;Export controls over chemical/biological weapon materials, Organizational challenges for the 1980's, May 2, 1989, Germ Wars, Biological weapons proliferation and the new genetics, May 17, 1989
Glenn John Hershel, Nunn Sam, États-Unis Senate, États-Unis Committee on governmental affairs | United States Government Printing Office | 1990