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Title: Geologische Kaart van Nederland. Schaal 1:50 000. 62 Heerlen. Kwartblad I, II, III, IV.
Description: [Haarlem:] Rijks Geologische Dienst, 1941-1942. Coloured geological map in 4 sheets, each 40x55cm, incl. colour key in side margins and col. section in lower margin, dissected and mounted on linen, folding back to 25x10cm. Fine.

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