Soviet SF novel from '60-ies, I only roughly remember the plot
It was a looong time ago I've read the novel (translation from Russian) about flight to Venus....
A lot is happening in the novel: After lift-off, the crew discovers a stowaway, a young girl. Then they land on Venus and find huge, pre-historic flora and fauna, insects the size of the elephant, dragonflies the size of the aeroplane (one of them even snatched one f the crew), the bacteria couple of metres in diameter... radioactivity-illuminated caves.. and so on.
I suspected author could have been G. Martynov (he wrote "Venus, Earth's sister" but it proved that was not the same novel. And, I am pretty sure the novel was not published on the west, but I know this forum has many members from European countries and Russia who may have read that novel...
So, question: What is the title of the novel and who wrote it?
Thank you in advance!
EDIT: The plot of the movie "Planet of storms" (available on youtube with english subtitles) from '62 is very similar to this novel.. but not quite.
Soviet SF novel from '60-ies, I only roughly remember the plot
