'73 Duster rear side window removal.

Well, my son and I just about have the '73 Duster parts car stripped of everything we need and then some, but there are just a few more items left to take off the car before it goes to the bone yard. One of those items would be the rear side fold out glass. Just looking at it, I'm not sure where to begin. Can anyone post a link on it's removal or tell me where to start, please?