@book{1998xpregnancydeliverymiscarriagestwinsfreaksferti,
  title = {Pregnancy, delivery, miscarriages, twins, freaks, fertility and sterility, and menstruation among the aboriginal inhabitants of the island of Sakhalin (Nivhgu, Ainu and Oroks)},
  year = {1998},
  doi = {10.1515/9783110820768-021},
  language = {ain},
  url = {https://doi.org/10.1515/9783110820768-021}
}