If anybody is familiar with the various editions of the Nn3 manual, are they different enough to justify having all or several of them? I presently have the 4th edition.
The 4th edition is identified as 1989. Have you seen any of the other editions and are they different in any fundamental way? I would gladly buy them if they would have any fundamentally different or additional useful information. I just fear that they would be more of a rehash of the same fundamental stuff.