Complex sentence: Wisden is a small-paged but very thick book (over 1,500 pages in modern editions) with a distinctive bright yellow cover that it has carried since the 75th edition in 1938--in previous years, covers varied between yellow, buff and salmon pink.
Split into simpler sentences: Wisden is a small-paged but very thick book (over 1,500 pages in modern editions) with a distinctive bright yellow cover that it has carried since the 75th edition in 1938. Prior to that, covers varied between yellow, buff and salmon pink.