By Björk Erkki A.   in Noise Control Engineering Journal

ISSN:0736-2501|42|5|171-178

Institute of Noise Control Engineering‎(1994)‎

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By Toivonen (Med)   Jokitulppo Jaana   Markku Toivonen (Med)   Björk Erkki   in Military Medicine

ISSN:1930-613X|171|2|112-116

AMSUS - Association of Military Surgeons of the U.S.‎(2006)‎

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By Jokitulppo Jaana   Toivonen Markku   Pääkkönen Rauno   Savolainen Seppo   Björk Erkki   Lehtomäki Kyösti   in Military Medicine

ISSN:1930-613X|173|9|906-912

AMSUS - Association of Military Surgeons of the U.S.‎(2008)‎

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