Explanatory Notes

The explanatory notes for these maps contain further information to the maps and are normally published some years after the edition of the maps.

The explanatory notes for these regional maps contain further information to the maps and are normally pusblished as a supplement to an article of one of the journals of the survey.

The explanatory notes for these historical maps contain further information to the maps and are normally published some years after the edition of the maps.

The explanatory notes for these thematic maps contain further information to the maps.

The explanatory notes for these mostly historical maps of foreign countries contain further information to the maps.