"I have developed a parser for a single workbook"

So are not using a module such as Spreadsheet::ParseExcel or Win32::OLE and have hand rolled a solution? Again, if you don't bother to show us what you're doing and what you're having problems with you make it harder to help, and drawing information piecemeal gets boring after a while.

Read and understand How do I post a question effectively?.

In reply to Re^3: Parsing multiple excel files in perl by marto
in thread Parsing multiple excel files in perl by reaper9187

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