You can use the method described here to get the previous sheet name:
http://www.*****-blog.com/archives/2...revious-sheet/
and then use formula:
=Lookup(9.99999e+307,INDIRECT("'"&PrevSheet&"'!B:B"))
oops. the forum screws up the link... if you google this exact phrase: Referring to Previous Sheet then pick the first link to Daily Dose of Excel, you will get to the same page.
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