Belgique 1:50 000 / Belgie 1:50 000 / National Geografisch Instituut = Belgien 1:50 000 / Nationalgeographisches Institut = Belgium 1:50 000 / National Geographical Institute.
Institut géographique national (Belgium)
Brussels : IGM,
1969-90.
Relief shown by contours and spot heights.
French, Dutch, German and English.
Earlier sheets in French, Dutch and English.
Panel title on some sheets: Carte topographique de Belgique 1:50 000 = Topografische Kaart van Belgie 1:50 000 = Topographische Karte von Belgien 1:50 000.
Various eds.
Each sheet named and numbered in upper margin.
Standard map series designation: [Serie] M736 = [Series] M736.
Includes notes, sheet index diagram, survey date diagram, magnetic declination diagram and ledgend.
Graphic index in central file.