<p>内容不对,应该是:</p><p>PROC SQL: Beyond the Basics Using SAS </p><p> by Kirk Paul Lafler </p><p>Copyright(c) 2004 by SAS Institute Inc., Cary, NC, USA </p><p>SAS Publications order # 58316 </p><p>ISBN 1-59047-534-8 </p>
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