Two great scientists of the nineteenth century : correspondence of Emil Du Bois-Reymond and Carl Ludwig
collected by Estelle Du Bois-Reymond ; foreword, notes, and indexes by Paul Diepgen ; translated [into English] by Sabine Lichtner-Ayèd ; edited, with a foreword by Paul F. Cranefield
Johns Hopkins University Press, c1982
Zwei grosse Naturforscher des 19. Jahrhunderts : Briefwechsel
Zwei grosse Naturforscher des 19. Jahrhunderts