Verteidigungskarte der Niederlande.
Netherlands.Topografische Dienst.
Germany.Wehrmacht.
[Berlin, Germany] : Wehrgeologengruppe V., Abteilung Holland,
1941.
Relief shown by hachures and form lines.
Shows land classified according to "Baunutzbarkeit" (usefulness for construction), and "Überflutbarkeit" (floodability).
Includes title sheet.
Incomplete: Sheets 1-18 only.