Zsigmondy, Richard . Colloids and the Ultramicroscope / Textual Documents Richard Zsigmondy. - 1st ed. / - New York : John Wiley & Sons , 1909. - ix,245p. : ill ; 18cm . Subjects--Index Terms: Ultramicroscopy Colloids Chemistry G-Chemistry Dewey Class. No.: 541.3452 / Z 8 C