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<dl><dd>The first four pages of the work are supplied from the author's 'Böheims phänerogamische und cryptogamische Gewächse', pp. 163-166; the next eight leaves are unpaged, and the regular numeration begins at p. 21</dd>
<dd>No. 12 was also published under the title 'Beiträge zur Naturgeschichte' and in this set consists of a photostat copy of pp. 547-610 and a xerox copy of pp. 643-658</dd>
<dd>4</dd></dl><br>Subjects:</div>
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Opiz, Philipp Maximilian</div>
<dl><dd><a rel="nofollow" class="external free" href="https://archive.org/details/naturalientausch1182opiz">https://archive.org/details/naturalientausch1182opiz</a></dd>
<dd><a rel="nofollow" class="external free" href="https://archive.org/download/naturalientausch1182opiz/naturalientausch1182opiz.pdf">https://archive.org/download/naturalientausch1182opiz/naturalientausch1182opiz.pdf</a></dd></dl>