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Experience of the use of open shield in softground shallow tunneling : Ocampo-Franco, R M Proc 6th Rapid Excavation and Tunneling Conference, Chicago, 12–16 June 1983V1, P329. Publ New York: AIME, 1983


Publisher
Elsevier Science
Year
1985
Tongue
English
Weight
108 KB
Volume
22
Category
Article
ISSN
0148-9062

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