Radioactivity 1997_2007 P1.docx

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**1997** A paper with text on it Description automatically generated **1998**  A paper with text on it Description automatically generated  **1999** A white paper with black text Description automatically generated  **2000** A paper with text and images Description automatically generated with medium confidence  **2001** A white background with black text Description automatically generated  **2002** A questionnaire with a number of words Description automatically generated with medium confidence  A paper with text and numbers Description automatically generated **2003**  A paper with numbers and a number on it Description automatically generated  **2004** A questionnaire with text and images Description automatically generated with medium confidence  A screenshot of a test Description automatically generated **2005**  A questionnaire with black text Description automatically generated **2006**  A questionnaire with text and images Description automatically generated with medium confidence **2007**