ALLOWANCE FOR DOUBTFUL ACCOUNTS:

6 Months Ended

Sep. 30, 2013

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

ALLOWANCE FOR DOUBTFUL ACCOUNTS:

7.             ALLOWANCE FOR DOUBTFUL ACCOUNTS:

Trade accounts receivable are presented net of allowances for doubtful accounts, returns and credits of $4.5 million at September 30, 2013 and $4.1 million at March 31, 2013.