@book{oai:nichibun.repo.nii.ac.jp:00001773,
 author = {Helms,  L. V.},
 month = {Jan},
 publisher = {国際日本文化研究センター, International Research Center for Japanese Studies},
 title = {Pioneering in the Far East, and journeys to California in 1849 and to the White Sea in 1878},
 volume = {4},
 year = {2014}
}