Item 54 - [DEHALU (Marcel)], Observations géodésiques. Tunnel [du charbonnage de] Espérance-Bonne Fortune. Mesures de nivellement, 28 octobre 1938 - 11 janvier 1939.
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BE LGL01 ENS022-54
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[DEHALU (Marcel)], Observations géodésiques. Tunnel [du charbonnage de] Espérance-Bonne Fortune. Mesures de nivellement, 28 octobre 1938 - 11 janvier 1939.
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1 cahier cartoné. 19,5 x 13 cm.
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