Roxana Mendoza Huaitalla and  Eva Gallmann and  Kun Zheng and  Xuejun Liu and  Eberhard Hartung,  Pig Husbandry and Solid Manures in a Commercial Pig Farm in Beijing, China.   journal   = {International Journal of Agricultural and Biosystems Engineering}, [online]. World Academy of Science, Engineering and Technology.
    May 2010, vol. 41(5). 217 - 226
    [viewed 26 April 2024]. Available from: https://publications.waset.org/pdf/10661.