On the LDS website, familysearch.org, in the library catalog, you can enter
''Demmin'', and you will find several entries for records for that Kreis.
Your town of Neu Kentzlin isn't mentioned directly, but there's a chance that
the records are wrapped up in one of the larger towns. Kr Demmin is part of
Stettin. From scanning my sources, it looks like there was a major
reorganization of villages and Kreis in 1939. Kreis Demmin is located just south of
the southern border of Kr Grimmen in Stralsund. This total area is known as
Pomerania, and was right in the middle of the Soviet zone of occupation (
East Germany). I would imagine that a lot of records didn't survive the war.
If you ''google'' Kr Demmin and/or NeuKentzlin, you might find some websites
that give you information on
what records might be available in archives or are still in the individuals
churches.
Good luck.
Linda Schwiesow Nycum
North Palm Beach FL