[The why of "Postal Radiations", a book of scientific and philatelic disclosure].
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D005602:France; D005858:Germany; D049672:History, 19th Century; D049673:History, 20th Century; D006801:Humans; D007558:Italy; D009613:Nobel Prize; D010678:Philately; D011871:Radiology / Q000266:history*; D012586:Science / Q000266:history*; D014481:United States
Il perché de "Le radiazioni postali" un libro di divulgazione scientifica e filatelica.