relation: https://episodesplatform.eu/eprints/2019/ title: Technical information: Sensor 4.5 Hz Geophones, Borehole sonde. subject: Other-additional study subject: Finland subject: Underground mining description: Sale brochure. publisher: Institute of mine seismology date: 2013 type: Other type: NonPeerReviewed format: text language: en identifier: https://episodesplatform.eu/eprints/2019/1/IMS%20SPEC%20GEO4_5BOREHOLE%2020130430%20MG.pdf identifier: UNSPECIFIED (2013) Technical information: Sensor 4.5 Hz Geophones, Borehole sonde. Institute of mine seismology.