Ernst und Agnes Haeckel
Subtitle: ein Briefwechsel
By: [herausgegeben von] Konrad Ruschke
Series: Harvard scientific biography preservation microfilm project -- 00105
Publisher: Urania-Verlag
Published: 1950
Place of publication: Jena
Language: ger
Number of pages: 219
Subjects: Correspondence; Zoologists
Notes: Includes bibliographical references and index.