00808nam0-22003131i-450-99000058205040332120121009152916.0000058205FED01000058205(Aleph)000058205FED0100005820520020821d--------km-y0itay50------baengy-------001yyELEMENTARY SEISMOLOGYRICHTER C.F.San FranciscoFreeman and Company1958Ingegneria sismicaMeccanicaVibrazioniDinamicaRichter,Charles F.ITUNINARICAUNIMARCBK99000058205040332115 GT-L/8-10278DINID07 G-253513DINSCDINIDDINSCUNINA