@misc{indiciae29b92ee8b469,
  title = {Non-genetic origin of isoenzymic variability in subterranean turions of monoecious and dioecious hydrilla},
  author = {F.J. Ryan and Joan S. Thullen and D.L. Holmberg},
  year = {1991},
  url = {https://pubs.usgs.gov/publication/70126198},
  note = {Source identifier: 70126198}
}