Help with imported contacts

[cjb5327]

Okay, so I thought that I didn't have all my contacts on my Google account so I exported all my contacts from my Droid X to my sd card and then imported from them from my sd card onto my S3. I now have duplicates of all my contacts and even triples for some odd reason. Is there any way to remove these imported contacts so that it's just back to my Google contacts.

Thanks