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  1. Ueber künstliche Bildung des Harnstoffs /
    By: Wöhler, Friedrich,
    Contributed by: Smithsonian Libraries
    Subjects: Organic compounds  Synthesis  Urea  
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  1. Control of Branchionus sp. and Amoeba sp. in cultures of Arthrospira sp.
    By: Méndez,Carlos - Uribe,Eduardo
    Type: Article
    In: Latin american journal of aquatic research
    Date: 2012-09-01
    Subjects: ammonium  Amoeba  Arthrospira  bicarbonate  Branchionus  Chile  predator control  Urea  
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  2. Intraspecific variations in colour morphs of Hypnea musciformis (Rhodophyta) in relation to nitrogen availability
    By: Martins,Aline P. - Yokoya,Nair S.
    Type: Article
    In: Hoehnea
    Date: 2010-09-01
    Subjects: ammonium  Hypnea musciformis  nitrate  Urea  
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