Delta's Bid to ChangeTerms Is Rejected  NEW YORK (Reuters) - Delta Air Lines Inc. &lt;A HREF="http://www.investor.reuters.com/FullQuote.aspx?ticker=DAL.N target=/stocks/quickinfo/fullquote"&gt;DAL.N&lt;/A&gt; on Friday  said a group of bond holders refused to change the terms of  their securities, adding to the headwinds the airline faces as  it struggles to avoid bankruptcy. 
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