主题：【已应助】求助4篇文献，谢谢大家

【篇号】1
【作者】Laanbroek, H. J. and Gerards, S.
【文章标题】Competition for limiting amounts of oxygen between nitrosomonas europaea and nitrobacter winogradskyi grown in mixed continuous cultures.
【期刊名，年份，卷（期），起止页码】Archives of Microbiology 1993. 159(5):453-459.
【全文链接】http://link.springer.com/article/10.1007/BF00288593#page-1
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【篇号】2
【作者】Morris, M. and Herbert, R.
【文章标题】The design and performance of avertical flow reed bed for the treatment of high ammonia, low suspended solids organic effluents.
【期刊名，年份，卷（期），起止页码】Water Science and Technology 1997. 35(5):197-204.
【全文链接】http://www.sciencedirect.com/science/article/pii/S0273122397000693
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【篇号】3
【作者】Mungur, A. S., Shutes, R. B. E., Revitt, D. M. and House, M. A.
【文章标题】An assessment of metal removal from highway runoff by a natural wetland.
【期刊名，年份，卷（期），起止页码】Water Science and Technology 1995. 32(3):169-175.       
【全文链接】http://www.sciencedirect.com/science/article/pii/0273122395006176
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【篇号】4
【作者】Thornton, S. F. and McManus, J.
【文章标题】Application of organic carbon and nitrogen stable isotope and c/n ratios as source indicators of organic matter provenance in estuarine systems: Evidence from the tay estuary, scotland.
【期刊名，年份，卷（期），起止页码】Estuarine, Coastal and Shelf Science 1994. 38(3):219-233.
【全文链接】http://www.sciencedirect.com/science/article/pii/S0272771484710158
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