@misc{indiciae1106890efd1d,
  title = {AN APPARATUS FOR SAMPLING DENSITY GRADIENTS.},
  author = {N NEWTON},
  year = {1965},
  doi = {10.1016/0003-2697(65)90279-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/14302465/},
  note = {Source identifier: 14302465}
}