Re: What is this?! (Wikipedia article based Daito Ryu book)
There is one by the same company for Aikido also. These are nothing more than compilations of information "mined" automatically from every public domain outlet available, and assembled offshore. The info is disjointed, often redundant, rhetorical and edited by people who have no clue as to the subject. The best description is what you'd get if you Googled "Aikido", and then just compressed and printed out all the hits. The best thing to do to make them go away is for nobody to buy them, which is much easier in view of the pricing.