@misc{indiciae26686cd8d53e,
  title = {Analysis of "morphine base".},
  author = {A Hanson and J E Lindgren},
  year = {1973},
  doi = {10.1007/bf00330289},
  url = {https://pubmed.ncbi.nlm.nih.gov/4747542/},
  note = {Source identifier: 4747542}
}