[Method of measurement of natural radioactivity of the air by products of radon fission].
D000388:Air; D011851:Radioactivity; D011883:Radium; D011886:Radon
D011886:Radon; D011883:Radium
AIR; DADIUM
Metodika izmereniia estestvennoi radioaktivnosti vozdukha po produktam raspada radona.