International Journal of Man-Machine Studies, Volume 31

Volume 31, Number 1, 1989

Volume 31, Number 2, 1989

Volume 31, Number 3, 1989

Volume 31, Number 4, 1989

Volume 31, Number 5, 1989

Volume 31, Number 6, 1989

a service of Schloss Dagstuhl - Leibniz Center for Informatics