En
RuTrud (Labour): Herald of Literature and Science. St. Petersburg, 1889-1896
Trud (Labour): Herald of Literature and Science. St. Petersburg, 1889-1896
- 1889
Work.T. 2, № 4-6
Work.St. Petersburg: A. P. Goppe, 1889-1896.T. 2, No. 4-6.1889. - 1891
Proceedings .... 1891. T. 9. No. 4. February 15
Saratov Scientific Archive Commission. Works ... Saratov, 1888-1916.
1891. T. 9. № 4. February 15. 1891.