THE FOURTH DIMENSION.
St. Petersburg: 1910. 96 pages plus 9 pages of adds; Original Russian edition, may be first edition but some references show this as originally printed in 1909; Later cloth binding with marbled-paper coverd boards. More
St. Petersburg: 1910. 96 pages plus 9 pages of adds; Original Russian edition, may be first edition but some references show this as originally printed in 1909; Later cloth binding with marbled-paper coverd boards. More