By James, E. O..
Barcelona : Vergara, 1963 .
639 p.

By Thurow, Lester.
Buenos Aires : J. Vergara, 1992 .
373 p. 9501512320

By Goleman, Daniel.
Buenos Aires : Javier Vergara, 2003 .
397 p. 9501516415

By Hamer, Dean.
Buenos Aires : Javier Vergara, 1998 .
319 p. 9501518558

By Goleman, Daniel.
Buenos Aires : Javier Vergara, 2008 .
397 p. 9501516415

By Hamer, Dean.
Buenos Aires : Javier Vergara, 1998 .
319 p. 9501518558

By Hamer, Dean.
Buenos Aires : Javier Vergara, 1998 .
319 p. 9501518558

By Hamer, Dean.
Buenos Aires : Javier Vergara, 1998 .
319 p. 9501518558

Buenos Aires : Vergara, 1958 .
222 p. : 20 cm.