Leipzig, Phil. Diss. v. 4. März 1911, Ref. Beckmann, Hantzsch.Mode of access: Internet
Berlin, Phil. Diss. v. 13. Aug. 1912, Ref. Gabriel, Nernst.Mode of access: Internet
Leipzig, Phil. Diss. v. 21. Juni 1909, Ref. Beckmann, Hantzsch.Mode of access: Internet
Leipzig, Phil. Fak., Ref. Le Blanc-Hantzsch, Diss. v. 14. Jan. 1908.Mode of access: Internet
Leipzig, Phil. Diss. v. 23. April 1910, Ref. Hantzsch, Beckmann.Mode of access: Internet
Leipzig, Phil. Diss. v. 8. Juli 1910, Ref. Beckmann, Hantzsch.Mode of access: Internet
Leipzig, Phil. Diss. v. 21. Sept. 1908, Ref. Beckmann, Le Blanc.Mode of access: Internet
Thesis (doctoral)--Albertus-Universitat zu Konigsberg i. Pr., 1902.Mode of access: Internet
Leipzig, Phil. Diss. v. 9. Juni 1910, Ref. Hantzsch, Beckmann.Mode of access: Internet
Königsberg, Phil. Fak., Ref. Albert, Diss. v. 8. Nov. 1904.Mode of access: Internet
Im Buchh. ebd.Berlin, Phil. Diss. v. 28. Juni 1913, Ref. Beckmann, Gabriel.Mode of access: Internet
Leipzig, Phil. Diss. v. 2. Aug. 1910, Ref. Beckmann, Hantzsch.Mode of access: Internet
Leipzig, Phil. Diss. v. 18. Mai 1911, Ref. Le Blanc, Beckmann.Mode of access: Internet
Sitzungsb. K. Akad. Wissensch. Wien. Math. naturw. Cl. 1891. 100. Abth. 1. 216-235. pl. 1, 2.Mode of...
Freiburg i.B., Naturw.-math. Diss. v. 1913, Ref. Gattermann.Mode of access: Internet
Thesis (doctoral)--Herzoglich Technische Hochschule Carolo-Wilhelmina Braunschweig.Mode of access: I...
Berlin, Phil. Diss. v. 13. Aug. 1912, Ref. Gabriel, Nernst.Mode of access: Internet
Leipzig, Phil. Diss. v. 21. Juni 1909, Ref. Beckmann, Hantzsch.Mode of access: Internet
Leipzig, Phil. Fak., Ref. Le Blanc-Hantzsch, Diss. v. 14. Jan. 1908.Mode of access: Internet
Leipzig, Phil. Diss. v. 23. April 1910, Ref. Hantzsch, Beckmann.Mode of access: Internet
Leipzig, Phil. Diss. v. 8. Juli 1910, Ref. Beckmann, Hantzsch.Mode of access: Internet
Leipzig, Phil. Diss. v. 21. Sept. 1908, Ref. Beckmann, Le Blanc.Mode of access: Internet
Thesis (doctoral)--Albertus-Universitat zu Konigsberg i. Pr., 1902.Mode of access: Internet
Leipzig, Phil. Diss. v. 9. Juni 1910, Ref. Hantzsch, Beckmann.Mode of access: Internet
Königsberg, Phil. Fak., Ref. Albert, Diss. v. 8. Nov. 1904.Mode of access: Internet
Im Buchh. ebd.Berlin, Phil. Diss. v. 28. Juni 1913, Ref. Beckmann, Gabriel.Mode of access: Internet
Leipzig, Phil. Diss. v. 2. Aug. 1910, Ref. Beckmann, Hantzsch.Mode of access: Internet
Leipzig, Phil. Diss. v. 18. Mai 1911, Ref. Le Blanc, Beckmann.Mode of access: Internet
Sitzungsb. K. Akad. Wissensch. Wien. Math. naturw. Cl. 1891. 100. Abth. 1. 216-235. pl. 1, 2.Mode of...
Freiburg i.B., Naturw.-math. Diss. v. 1913, Ref. Gattermann.Mode of access: Internet
Thesis (doctoral)--Herzoglich Technische Hochschule Carolo-Wilhelmina Braunschweig.Mode of access: I...
Berlin, Phil. Diss. v. 13. Aug. 1912, Ref. Gabriel, Nernst.Mode of access: Internet
Leipzig, Phil. Diss. v. 21. Juni 1909, Ref. Beckmann, Hantzsch.Mode of access: Internet
Leipzig, Phil. Fak., Ref. Le Blanc-Hantzsch, Diss. v. 14. Jan. 1908.Mode of access: Internet