@article{oai:tsukuba.repo.nii.ac.jp:00049729,
 author = {正井, 泰夫 and Masai, Yasuo},
 journal = {筑波大学人文地理学研究, Tsukuba studies in human geography.},
 month = {Mar},
 pages = {71--77},
 title = {An International Comparison of the Milliol Cities in the World with Special Reference to Hydrological Location},
 volume = {5},
 year = {1981}
}