I bought this book recently at a used book sale. It's a paperback book in a hardcover library binding, From the University at Buffalo Library. It was published by the United Nations in 1976. I like the strangeness of the cover illustration. Another interesting thing about the book is that the last person to check it out was minimalist composer, video artist, filmmaker and Buffalo resident Tony Conrad in 1980. Conrad's website here, and a recently published (massive) book about his work here.