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1per Escher, Heinrich H.### CRL customization ### ?> ### Add publisher and desc details ### ?>
Publicat 1909Switzerland : Eidgenössische Technische Hochschule Zürich, 1909.102 p. [2] leaves of plates : ill. ; 23 cm. -
2per Escher, Heinrich H.### CRL customization ### ?> ### Add publisher and desc details ### ?>
Publicat 1912Heidelberg, C. Winter's Universitätsbuchhandlung, 1912.15 p. illus. -
3per Escher, Heinrich H.### CRL customization ### ?> ### Add publisher and desc details ### ?>
Publicat 1919Switzerland : Universität Zürich, 1919.15 p.