That's correct:
I've a book per month (say JAN2012, FEB2012 etc.). Each book has sheets, one for every workday (say day1, day2, day3 etc.) where I put data as follows:
book: JAN2012
Book1ABCD1date:2/1/20122X1X2X33AAA3296289998034BBB753419913895day1...