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ALLOWANCE FOR DOUBTFUL ACCOUNTS:
 9 Months Ended
Dec. 31, 2011
ALLOWANCE FOR DOUBTFUL ACCOUNTS:  
ALLOWANCE FOR DOUBTFUL ACCOUNTS:

8.             ALLOWANCE FOR DOUBTFUL ACCOUNTS:

 

Trade accounts receivable are presented net of allowances for doubtful accounts, returns and credits of $4.5 million at December 31, 2011 and $5.5 million at March 31, 2011.