Just a quickie today - a couple more Russian book covers. No information on the artists I'm afraid but more striking designs from our friends behind the Iron Curtain. Well, they were behind it when these were published!
1968. I believe the title translates as something like "Man Under the Water."
I remember using the stippling technique seen here back in my Doctor Who fan days, producing illustrations inspired by the likes of Frank Bellamy and Chris Achilleos.