FTD-208-04 FTU Dithiooxamide Test for Copper Residues.pdf https://fbilabqsd.fbi.gov/file-repository/firearms--toolmarks/operations/08-ftu-dithiooxamide-test-for-copper-residues-4.pdf/view https://fbilabqsd.fbi.gov/file-repository/firearms--toolmarks/operations/08-ftu-dithiooxamide-test-for-copper-residues-4.pdf/@@images/image

FTD-208-04 FTU Dithiooxamide Test for Copper Residues.pdf