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. 2021 Nov 29;9(Suppl 2):S195–S208. doi: 10.9745/GHSP-D-21-00332

FIGURE 6.

FIGURE 6

Document Frequency of Key Approaches in the U.S. Agency for International Development’s Development Experience Clearinghouse, 1975–2020a

a For each approach, we conducted a keyword search over all the text of all documents, including synonyms, unique abbreviations, or adjacent approaches when appropriate.