1981-1981

https://w3id.org/zericatalog/date/1981ca-1981ca an entity of type: E52_Time-Span

ca. 
ca. 
1981-01-01T00:00:00Z 
1981-01-01T00:00:00Z 
1981-1981 
1981 -1981 

data from the linked data cloud