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When practice meets policy in mathematics education: A 19 c..
OECD Education Working Papers, no.268
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Yearbook of the United States Department of Agriculture, 19..
United States congressional serial set ; serial set no. 5481;House document / 60th Congress, 2nd session. House ; no. 1560
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Annual report of the Board of Regents of the Smithsonian In..
United States congressional serial set ; serial set no. 1141;Mis. doc. / 37th Congress, 2nd session. House ; no. 77