@article{oai:repository.dl.itc.u-tokyo.ac.jp:00022578,
 author = {坪井, 善勝},
 issue = {2},
 journal = {生産研究},
 month = {Feb},
 note = {application/pdf},
 pages = {41--47},
 title = {サウジアラビア},
 volume = {18},
 year = {1966}
}