Photocopy. Thesis--University of Pennsylvania. / Cover title. Bibliography: p. 76-79.

Published also as Thesis (Ph. D.)--Columbia University, 1927.

Inaug.-diss.--Jena. / Lebenslauf. Benutzte literatur.

Thesis (Ph. D.)--University of Pennsylvania, 1931. / Bibliography: p. 232-241.

Photocopy. Thesis--University of Pennsylvania. / Cover title. Bibliography: p. 76-79.

Thesis (Ph. D.)--University of Pennsylvania, 1927. / "This study deals with the work of the Interstate commerce commission in enforcing the provisions of the Transportation act of 1920 requiring its supervision over the security issues of railroad corporations."--Pref. Published also without thesis note. Bibliography: p. 119-120.

Thesis (Ph. D.)--Columbia University, 1927. / Vita. Published also as Studies in history, economics and public law, ed. by the Faculty of political science of Columbia university, v. 67, no. 2; whole no. 162.

Thesis (Ph. D.)--University of Texas at Austin, 1998. / Vita. Includes bibliographical references (leaves 423-437). Available also in a digital version from Dissertation Abstracts.

Thesis (master's)--University of London, 1924. / Three countries are discussed: England, Prussia, and India. Bibliography at end of each chapter.

Thesis (Ph. D.)--University of Wisconsin--Madison, 1934. / Typescript. Includes abstract and vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 215-217).