This is one option:
=COUNTIF($A$4:$A$18,A4)1
copy down, and use a Autofilter to find all True

HTH
Ola Sandström

Picture encl.:
http://www.excelforum.com/attachment...tid=3498&stc=1


+-------------------------------------------------------------------+
|Filename: Clipboard01.jpg |
|Download: http://www.excelforum.com/attachment.php?postid=3498 |
+-------------------------------------------------------------------+

--
olasa
------------------------------------------------------------------------
olasa's Profile: http://www.excelforum.com/member.php...o&userid=17760
View this thread: http://www.excelforum.com/showthread...hreadid=379019