@misc{indiciae2c1705bb4d51,
  title = {Qualitative and quantitative variations in dwarf ragweed pollens.},
  author = {A R Goldfarb and M Kaplan},
  year = {1967},
  doi = {10.1016/0021-8707(67)90086-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/4964047/},
  note = {Source identifier: 4964047}
}