An Empirical Study of Gunpowder Residue Patterns

1974 ◽  
Vol 19 (3) ◽  
pp. 10201J ◽  
Author(s):  
F. C. Barnes ◽  
R. A. Helson
1996 ◽  
Vol 81 (1) ◽  
pp. 76-87 ◽  
Author(s):  
Connie R. Wanberg ◽  
John D. Watt ◽  
Deborah J. Rumsey

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