1
Published: 1968
Superior document: 1:250 000 Geological series - Explanatory notes SG/55-7
2
Published: 1970
Superior document: 1:250 000 Geological series - Explanatory notes SG/55-2
3
Published: 1971
Superior document: 1:250 000 Geological series - Explanatory notes SG/55-11
4
Published: 1971
Superior document: 1:250 000 Geological series - Explanatory notes SG/55-12