Feed Urls for Labels-Comments-Particular Posts In Blogger

As you would be knowing the feed url for your blog for sure.Does you know the feed url for your blog comments,ya you may be knowing this too but i think will not be knowing the feed url for your labels and individual blogger post.As you extract your feeds from bloggger feeds ,you can also extract feeds from blogger comments and blogger labels too.I mean to say like you recent post widget for your