I have the first edition of General Choi's encyclopedia (blue one), and was wondering if the subsequent editions are different in content. I see that the latest one with the green cover is on sale, and if the content is somewhat or even slightly different, then I might get it, just so I can have his first and last work on the subject.
Is the content different? Should I get the latest edition?
Is the content different? Should I get the latest edition?