[Eesti N.S.V. ; Latvijas P.S.R.].
Estonia.St. Topo-Hüdrograafia Osakond.
Latvia.Armija.G̦eod. top. dal̦a.
[Tallinn] : Sv. St. Topo-Hüdrograafia osakonne väljaanne ; [Riga] : G̦eodezijas-Topografijas daļa,
[1931-
Relief shown by contours and spot heights. Depths shown by isolines.
Graphic index with maps.