The zero system as a polar system in the linear prima of conoseconds
1912 E. S. Fedorov
I. P. Dolbnya
1912 N. M. Krylov
Determining the most advantageous dimensions of a mine field
1912 L. M. Rutenberg
In memory of I. P. Dolbnya
1912 Volume 4(1)
Proof of one Fuchs theorem
1912 M. N. Akimov
About the rocks of a small part of the gold-bearing area in the Semipalatinsk region
1912 G. G. Kell