Sheet identifiers

Sheets of the ICGC series can be found with two kind of identifiers:

• Absolute: it is composed by the column and row where it is in the grid applied in Spain for each scale.

• Relative: it is composed by the column and row where it is in the corresponding MTN50 (Mapa Topográfico Nacional 1:50.000) sheet, preceded by the identifier of this MTN50 sheet.