It’s doubtful there’s a better bookstore in California. In raw terms, the store holds more than 150,000 titles and anyone who’s visited the place realizes they are all out on the shelves — and sometimes above and below the shelves, as well. Run by an owner who defies all the bean-counting rules that defined bookstores in the last 20 years, Mahri Kerley’s comfy 33-year-old business ought to be a landmark. From a massive children’s section to the array of popular writers who frequently visit the store for signings, Chaucer’s is bibliophilic ecstasy.