Post #1601289

@tnt @wren6991 If Pi can't help, CSDN has a couple listings. This one seems most promising if you feel like paying the vultures a few bucks. There are a few cheaper ones for 50 points that have 127 pages which is different from this preliminary PDF. https://download.csdn.net/download/weixin_42662171/86203355 the other one https://download.csdn.net/download/zf429_0/6987453