Bijutsu nenkan Heisei 11 nen ban = Art Annual 1999
Nihongo wa naze henka suru ka : Bogo to shiteno nihongo no rekishi Dynamics of the Japanese Language from a Universal Point of View
Kôjien : Dai 5 ban
Bunmei no shôtotsu
Japan : Reportagen eines deutschen Arztes
Ricerche sulla cartografica di Ezo ; Supplemento No.1, Alla Rivista Degli Studi Orientali, Volumme 71
Die japanische Umweltindustrie - Anbieter, Nachfrager, Marktstrukturen ; Marburger Japan - Reihe Band 25
Inducing Democracy by Occupation : American Successes and Failures in Japan and Korea, 1945 - 48. Harvard University Program on U.S. - Japan Relations ; USJP Occasional Paper 98 - 17
Deepening Economic Interdependence in East Asia : Implications for the United States and Japan. Harvard University Program on U.S. - Japan Relations ; USJP Occasional Paper 98 - 16
Fiscal Structural Reform in Japan. Harvard University Program on U.S. - Japan Relations ; USJP Occasional Paper 98 - 15