00506cam a22002054a 4500003001000000005001700010008004100027020001500068040002500083041000800108044000800116080000800124100002200132245003200154260003200186300001100218650002300229650002900252655001900281AR-SsjUIB20250716140306.0250429s1980 xxu 000 0 eng d a0898740673 aAR-SsjUIBcAR-SsjUIB0 aeng axxu a6241 aCarson, Briton A.10aGeneral excavation methods. aNew York :bKrieger,c1980. a392 p. 7aExcavaciones2lemb 7aIngeniería civil2lemb 7aLibro2unescot