Hi gang, GEOMETRICS ES-2401 EXPORATION SEISMOGRAPH EC&G ES2401 Item number: 3857688672 ends Dec 9 Also, GEOMETRICS ES-2401 EXPORATION SEISMOGRAPH EC&G ES2401 Item number: 3857688672 ends Dec 11 This is one of Bolt's books. Bob Barns __________________________________________________________ Public Seismic Network Mailing List (PSN-L)