000			003250000a22001450004500
001			EST
003			551:624 / L23
004			M
006			m
100			_aLegget, Robert F.
100			_aBosswell, P. G. H., prol.
245			_aGeology and engineering
650			_a<GEOLOGIA><INGENIERIA><CONSTRUCCIONES>
999			_c11313 _d11313