This is a tough book to rate, and I am giving it a four mainly for the terrific references to other books and web sites. Much of it is just plain common sense, as in "well, duh!", but sometimes it helps to see it in black and white. I particularly loved (thrown in for no apparent reason that I can discern) the exact instructions for driving from the easternmost point in the U.S., to the westernmost point, by the quickest...
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