| ... | ... | @@ -737,6 +737,10 @@ Free-range husbandry of laying hens. Methodology for calculating the nitrogen ex |
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* http://www.anderlbauer.de/0000009bb40e00207/0000009bb40ea1921/0000009bce0c7d84c/index.html \[12.10.2016\]
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##### Huis In't Velt, J.W.H., Dousma, F., Nijboer, G.M. (2011)
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* Gaseous Emissions and fine dust from rabbit housing systems. Livestock research Wageningen, Report 459.
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##### <span dir="">HVL – Hessischer Verband für Leistungs- und Qualitätsprüfungen in der Tierzucht e.V.</span> (2019)
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* Jahresbericht 2018.\
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