data.table/articles/datatable-reference-semantics.html</a>.
</div>
<div id="ref-NCES:2010" class="csl-entry">
NCES. 2010. <span>“<span class="nocase">IPEDS Classification of
Instructional Programs (CIP)</span>.”</span> <span>National Center for
Education Statistics</span>. <a href="https://nces.ed.gov/ipeds/cipcode/" class="external-link">https://nces.ed.gov/ipeds/cipcode/</a>.
</div>
</div>
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