It is Uncertain whether some of the books attributed to Hubbard because of the CoS were basically prepared by him; as an example, it is speculated which the later guides with the Mission Earth collection ended up the truth is ghostwritten. Some "Hubbard" textbooks, including the infamous Philadelphia "Doctorate" https://sein-seien34441.activoblog.com/3462091/indicators-on-l-ron-hubbard-you-should-know