Category:Impurities
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| − | [[File:Impurities Not Original Measuring Metal Impurities in Industrial Waste Water NARA 549333.jpg|200px|thumb| | + | [[File:Impurities Not Original Measuring Metal Impurities in Industrial Waste Water NARA 549333.jpg|200px|thumb|right|A 1973 photo of technician, Zeljko Kwokal measuring metal impurities in waste water - Photo by Yoichi Robert Okamoto and the National Archives and Records Administrion- Not an original record- #54933.]] |
[[Category:Materials_science_and_technology|{{PAGENAME}}]] | [[Category:Materials_science_and_technology|{{PAGENAME}}]] | ||
Revision as of 21:36, 21 November 2012
IEEE GHN Category
