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Kiikkilä O, Perkiömäki J, Barnette M, Derome J, Pennanen T, Tulisalo E, Fritze H.Kiikkilä O, et al.J Environ Qual. 2001 Jul-Aug;30(4):1134-43. doi: 10.2134/jeq2001.3041134x.J Environ Qual. 2001.PMID: 11476489Free article.
Helmisaari HS, Salemaa M, Derome J, Kiikkilä O, Uhlig C, Nieminen TM.Helmisaari HS, et al. Among authors: kiikkila o.J Environ Qual. 2007 Jun 27;36(4):1145-53. doi: 10.2134/jeq2006.0319. Print 2007 Jul-Aug.J Environ Qual. 2007.PMID: 17596623