Artificiales

Internet Municipal

Ayuntamiento de La Coruña

Concello de A Coruña

Esperanto

Interlingua

Lojban

Verduriano

	Esperanto by Donald Harlow
	Plena Manlibro de Esperanta Gramatiko by Bertilo Wennergr
	Uchebnik yazyka esperanto by B. G. Kolker
	Free Esperanto Course
	Esperanto HyperCourse

	The Complete Lojban Language by John Cowan
	Everyday Interlingua: An Online Course by Paul LeCorde
	A Grammar of Verdurian by Mark Rosenfelder