@article{椿山_1908, 
  title={一千九百〇七年九月卅百に於ける英露の波斯協約}, 
  volume={20}, 
  DOI={10.5026/jgeography.20.342}, 
  number={5}, 
  publisher={Tokyo Geographical Society}, 
  author={椿山, 學人}, 
  year={1908}
  }