What does the 1981 copyright have to do with anything? The book has stood the test of time. I've had my copy since 1984 and still refer to it regularly. Some don't like the book because it covers the acupoints by anatomical region. Point descriptions include traditional location descriptions, precise anatomical locations, traditional functions, indications, illustrative combinations, classical combinations, needling method plus additional remarks.
There are separate sections on ear acupuncture, surgical techniques, needling methods in the Nan Jing (Classic of Difficulties), a concise theory and diagnosis section. Of note, the index has the main pages for each acupoint in bold to set them apart from other references, a perhaps small but important indication of the thought that went into the layout of the book. If I had to have only one book on acupuncture, this would be it. Fact is, with all of its 741 pages, this book is the bible, at least in English!