Základní vodohospodářská mapa ČR.
[Prague] : C̆eský úr̆ad zemĕmĕr̆ický a katastrální,
1976-
Relief shown by contours and spot heights.
Base-map title: Základní mapa ČR
Statements of attribution differ in wording depending on ed. date and language.
Various eds. of some maps.
Base maps copyright 1971; thematic overprint copyright 1972 thru 1978.
Graphic index in central (thematic) file.