Esperanto in the modern world = Esperanto en la moderna mondo : studies and articles on language problems, the right to communicate, and the international language (1959-1982) /
compiled by Rüdiger and Vilma Sindona Eichholz
. – 2nd ed.
. – Bailieboro, Ontario : Esperanto Press, 1982
. – 600 p. : il. ; 22 cm