"Electronic publications." . . "Project Gutenberg Literary Archive Foundation." . . "Electronic publishing." . . "Electronic publishing" . "Gutenberg" . . "Databases" . "Electronic books"@en . . . . . . . . . . . "Free eBooks by Project Gutenberg"@en . . . . . . "Collections"@en . . "Project Gutenberg" . . "Project Gutenberg"@en . "Project Gutenberg"@da . . . "Database offering access to a compilation of public domain literature digitally re-published. Presents electronic texts of classic literature, historical documents, religious works, and reference tools." . . . . . . . . "Offers a searchable collection of public domain books. Project Gutenberg is a volunteer effort to digitize and archive cultural works and to encourage the creation and distribution of free eBooks and other materials available to the public."@en . "Sources" . . . . . . .