Employees of the Komarov Botanical Institute of Russian Academy of Sciences measure the mass and area of leaves in the field.
<a href="//commons.wikimedia.org/w/index.php?title=User:Anton_Korablev&amp;action=edit&amp;redlink=1" class="new" title="User:Anton Korablev (page does not exist)">Anton Korablev</a>
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<span class="int-own-work" lang="en">Own work</span>