The allotropy of germanium dioxide
[by] Horace R. Blank.

APA Citation

Blank, H. Richard. (1924). The allotropy of germanium dioxide. Philadelphia: [Printed by Westbrook Publishing Co.].

MLA Citation

Blank, Horace Richard. The Allotropy of Germanium Dioxide. Philadelphia: [Printed by Westbrook Publishing Co.], 1924.

Warning: These citations may not always be complete (especially for serials).