{"value"=>"227. Opie, Iona Archibald, and Peter Opie."}
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{"value"=>"<p>Introduction to children's games in street and playground. (From: Opie, Iona Archibald. <span class=\"title\">Children's games in street and playground.</span>Oxford: Clarendon Press, 1969. p. 1-16.)</p>"}