By Dbrowska Monika   Krzek Jan   in Journal of AOAC International

ISSN:1944-7922|93|3|771-777

AOAC International‎(2010)‎

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By Hubicka Urszula   Krzek Jan   in Journal of AOAC International

ISSN:1944-7922|91|6|1331-1338

AOAC International‎(2008)‎

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By Krzek Jan   Sherma Joseph   in Journal of AOAC International

ISSN:1944-7922|93|3|751-753

AOAC International‎(2010)‎

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By Krzek Jan   Starek Magorzata   in Journal of AOAC International

ISSN:1944-7922|84|6|1703-1707

AOAC International‎(2001)‎

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By Maślanka Anna   Krzek Jan   in Journal of AOAC International

ISSN:1944-7922|88|1|70-79

AOAC International‎(2005)‎

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By Krzek Jan   Hubicka Urszula   Szczepańczyk Justyna   in Journal of AOAC International

ISSN:1944-7922|88|5|1530-1536

AOAC International‎(2005)‎

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By Hubicka Urszula   Krzek Jan   Szczyrbowska Olga   in Journal of Liquid Chromatography & Related Technologies

ISSN:1082-6076|32|9|1196-1209

Taylor & Francis Ltd‎(2009)‎

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By Stolarczyk Mariusz   Anna Maślanka   Krzek Jan   in Journal of Liquid Chromatography & Related Technologies

ISSN:1082-6076|31|13|1892-1902

Taylor & Francis Ltd‎(2008)‎

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By Kwiecień Anna   Krzek Jan   Walczak Maria   in Journal of AOAC International

ISSN:1944-7922|95|5|1418-1424

AOAC International‎(2012)‎

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By Krzek Jan   Maślanka Anna   Lipner Pawel   in Journal of AOAC International

ISSN:1944-7922|88|5|1549-1554

AOAC International‎(2005)‎

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