"Zirkus." . . "Circus performers -- History -- Congresses." . . "Artistes de cirque Histoire." . . "Circus -- Social aspects -- Congresses." . . "1900 - 1999" . . "Cirque Histoire." . . "PERFORMING ARTS / Circus" . . "Soziales." . . "Circus -- History -- Congresses." . . . . "Aufsatzsammlung" . . "The many worlds of circus" . "The many worlds of circus"@en . . . . "Conference papers and proceedings"@en . "Conference papers and proceedings" . . . . . . . . . . . . "Electronic books"@en . "Electronic books" . . . . . . "Conference proceedings"@en . . . . . "History"@en . . . . "Criticism, interpretation, etc"@en . . . . . . . "Acrobats and manipulators of objects, trained animals, and clowns - have been performing throughout history. In the eighteenth century, the invention of the circus ring provided a focus for the activities, and the modern circus was born. Once the circus"@en . . . "The Many Worlds of Circus" . . . . . .