"États-Unis" . . "USA." . . "The American frontier. A social and literary record"@en . . . . . . . . . . "The American Frontier. A social and literary record. [Edited by C.M. Babcock.]"@en . . "The American frontier a social and literary record"@en . "The American frontier; a social and literary record" . . . . . . . . . . . . . . "The American frontier : a social and literary record"@en . . "The American frontier : a social and literary record" . "The American frontier : A social and literary record" . . "The American frontier: a social and literary record" . . . . . . "Littérature américaine Anthologies." . . . . "Frontier." . . "Frontières États-Unis." . . "Życie pionierów (osadników) Stany Zjednoczone." . . "Régionalisme États-Unis." . .