By "familiar with" here, I mean, familiarity with the content, not knowledge of its existence.
If there are communism experts who want to focus on other regions, such as Vietnam, Cuba, Poland, or other communist areas during the Soviet era, that would be very welcome, too.
In North Vietnam, religion, for some twenty years, was something for the elders. Churches, and pagodas alike, were left in ruins, or converted to something else.
Food rations were a weapon against religion. If someone dodged the draft, his extended family's rations of food would be cut. If someone was caught doing religion, cut......So only the elders, above 60, were keen with following religions.
There were 2 very different Vietnam: the North overpopulated and the South underpopulated. Human lives in North Vietnam were, and are, much cheaper. But things are improving, human lives in both Vietnams are now equally cheap.
Religious matters in South Vietnam after Commie invasion was also harsh, but much more laxed than the above. It looked somewhat similar to that of Cuba.