Making dsk images

[angus@hamgate.concordia.ca (Angus March (VE2UFP))]

I looked for this in the FAQ but came up empty. 
	I have a bunch of Apple II
disks that I don't actually have (I loaned them to my //gs-owning friend)
and now that I have gotten into Apple emulators I want them back. I told him
to hold onto them in case I might find it more efficient for his gs to make
the image files. Someone just told me that the IBM-type floppies won't
tollerate the Apple-formatted floppies, so it seems that I have to use his
Apple to make them. Now, how do I do that? What program will make .dsk files
out of Apple II 140k (I would imagine, no pun intended) floppies. 

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