.org/10.24272/j.issn.2095-8137.2018.032" target="_blank">10.24272/j.issn.2095-8137.2018.032</a></td>
      <td>3l3kyypm</td>
      <td>0.355821</td>
      <td><a href="Topic_03.html#ruvs4sxp">van_Helden_2013</a></td>
      <td></td>
    </tr>
    <tr>
      <th id="q8qis03p";>35</th>
      <td>Dietz_2020</td>
      <td>Earth Day: 50 Years of Continuity and Change in Environmentalism</td>
      <td>Dietz, Thomas</td>
      <td>2020</td>
      <td>2020-04-17</td>
      <td>PMC</td>
      <td>N</td>
      <td>