title: A multiwire proportional counter for monitoring of airborne positron-emitting gases.
authors.affiliation: Accelerator Laboratory, Abo Akademi University, Turku, Finland.
authors.forename: S J
authors.initials: SJ
authors.lastname: Heselius
authors.forename: H T
authors.initials: HT
authors.lastname: Sipilä
mesh_terms: D000396:Air Pollutants, Radioactive / Q000032:analysis*; D011834:Radiation Monitoring / Q000295:instrumentation*
chemical_list: D000396:Air Pollutants, Radioactive