Results 261 to 261 of about 48,270 (261)
Some of the next articles are maybe not open access.
(compressed-)air shield tunnelling (Brit.)
2014
openaire
copy doi
(10.1007/978-3-642-41714-6_33727)
openaccessbutton.org (pdf)
+1 more source
11. sustainability
6. clean water
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