Leo Belgicus : an illustrated and annotated carto-bibliography / H.A.M. van der Heijden Eenheid op papier : de Nederlanden in kaart van keizer Karel tot Willem I / [catalogus samengest. door H.A.M. van der Heijden en J. Roegiers] hes studies in the history of cartography and scientific instruments oldest maps of the Netherlands : an illustrated and annotated carto-bibliography of the 16th century maps of the XVII Provinces / H.A.M. van der Heijden