@book{oai:ir.ide.go.jp:00028426,
 author = {Valentin, M. Yakushik},
 month = {},
 note = {Ja/622.3/A1001, application/pdf, TPC003200_005},
 publisher = {アジア経済研究所},
 title = {第2章 カスピ海地域の基本的特性},
 year = {1998}
}