UUpton SinclairUpton Sinclairde Upton SinclairEdiciones (2)Upton Sinclair (1984)Artichoke Press · inglésUpton Sinclair (1973)Folcroft Library Editions · ISBN 9780841488588Más obras de Upton SinclairOOlaj!Olaj!IIt happened to DidymusIt happened to DidymusThe Book of Life, Mind and Body