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                  <DIV>&nbsp; I want to convert a case.cif file to case.struct. 
                  error information as follows:</DIV>
                  <DIV>&nbsp;</DIV>
                  <DIV><FONT face=宋体 size=2>  cif2struct case.cif<BR>&nbsp;Cell 
                  dimension(s) missing!<BR>&nbsp; F&nbsp; F&nbsp; F</FONT></DIV>
                  <DIV>&nbsp;</DIV>
                  <DIV>&nbsp;can you help me ? </DIV>
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                  face=宋体>&nbsp;      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;GengHua<BR></FONT><FONT 
                  face=宋体>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<A 
                  href="mailto:hgeng@iccas.ac.cn">hgeng@iccas.ac.cn</A></FONT></FONT></DIV>
                  <DIV><FONT face=宋体><BR><FONT size=2>          &nbsp;  &nbsp; 
                  &nbsp;2003-07-16</FONT></FONT></DIV><FONT 
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