(NiSTORIQ KALENDARQ (B/ s - (NiDELXSON(B, (NnAUM iLXI^s ((NlENINGRAD (B:s (NnAU^NOE KNIGOIZD(B-(NWO(B,s, 1925)
(NbIBLIOGR(B.: (NS(B. 170-171s
Keywords: (NaSTROMETRIQs; (NhRONOLOGIQs