@misc{oai:ir.ide.go.jp:00048250,
 author = {諏訪, 兼位},
 month = {Sep},
 note = {PJa/3/Af4, application/pdf, ZAF199309_003},
 title = {巻頭言：地球の歴史とアフリカ大陸},
 year = {1993}
}