By Hanks Alan R.   Tomkins David F.   in Journal of AOAC International

ISSN:1944-7922|83|2|431-434

AOAC International‎(2000)‎

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By Kahn Bobbi B.   Tomkins David F.   in Journal of AOAC International

ISSN:1944-7922|84|2|317-322

AOAC International‎(2001)‎

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By Tomkins David F.   Frank C. W.   in Applied Spectroscopy

ISSN:0003-7028|25|5|539-541

Society for Applied Spectroscopy‎(1971)‎

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By Gavlick Walter K   Tomkins David F   in Journal of AOAC International

ISSN:1944-7922|91|1|1-4

AOAC International‎(2008)‎

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