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  Geigy, Ciba und Sandoz (1758–1970) - Novartis.ch

  https://web.archive.org/web/20100112150342/http://www.novartis.ch/about-novartis/company-history/geigy.shtml

  Geigy, Ciba und Sandoz (1758–1970)

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  Geigy, Ciba und Sandoz (1758–1970) - Novartis.ch

  http://wayback.archive.org/web/20130502065849/http://www.novartis.ch/about-novartis/company-history/geigy.shtml

  Geigy, Ciba und Sandoz (1758–1970)

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