(NrUSSKIE MESTOROVDENIQ ISLANDSKOGO [PATA (B/s - (NrEWUCKAQ(B, (NeLENA dMITRIEWNAs ((NpETROGRAD(B. s [(NkOMIS(B. (NPO IZU^ENI@ ESTESTWENNYH PROIZWODITELXNYH SIL rOSSII(B],s, 1917)
Keywords: (NmESTOROVDENIQ POLEZNYH ISKOPAEMYH (B- (NgLINYs