@misc{indiciae3005e3a6cc04,
  title = {Manure sampling procedures and nutrient estimation by the hydrometer method for gestation pigs.},
  author = {Jun Zhu and Pius M Ndegwa and Zhijian Zhang},
  year = {2004},
  doi = {10.1016/j.biortech.2003.09.010},
  url = {https://pubmed.ncbi.nlm.nih.gov/14766157/},
  note = {Source identifier: 14766157}
}