Published also as Thesis (Ph. D.)--Columbia University, 1925, under title: History of the trade associations of the German coal industry under private and state control with an introductory chapter on the nature of the German kartell or trade association.

Originally presented as the author's thesis, Bonn. / Bibliography: p. [224]-246.

Thesis (Ph. D.)--University of Pennsylvania, 1929. / Bibliography: p. 132-134.

Inaug.-Diss.--Heidelberg. / Vita. Bibliography: p. 503-518.

Part of thesis (PH. D.)--University of Chicago, 1935. / "Private edition, distributed by the University of Chicago libraries." Published also as Michigan University, School of Business Administration, Bureau of Business Research, Michigan business studies, vol. VII, no. 1. eContent provider-neutral record in process. Description based on print version record.

Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 34-36). Also available in electronic version. Access restricted to campus users.

Praca habilitacyjna--Uniwersytet Wrocławski. / Summary in German. Bibliography: p. [277]-280.

Thesis (Ph. D.)--Columbia University, 1926. / Includes vita. Includes index. Bibliography: p. 257-264.

Thesis--University of Chicago. / Pub. also as Historical reports on war administration and as Office of Temporary Controls, Office of Price Administration, General publication no. 3. Bibliography: p. [183]-190.

Thesis (Ph. D.)--Columbia University, 1937. / Vita. Bibliography: p. 86-88.