{"product_id":"portneys-ponderables-joe-portney-9780914025191","title":"Portney's Ponderables: Brain Teasers for Navigators","description":"\"Navigation puzzles, controversies, historical problems, and other ponderables demystified by an expert navigator and writer. Joe Portney is a US Naval Academy graduate and Air Force navigator who has participated in three historic flights over the North Pole. He is a past President of the Institute of Navigation and recipient of the Weems Award for continuing contributions to the art and science of navigation. He has produced a wonderful little book here, chock filled with interesting tidbits, each of which can be read in a few minutes but will stimulate your thought for many days to come. Some are very basic, others more involved, but he provides a clear explanation of each. Some refer to math computations that we might not all be familiar with, but this is not a distraction from the main points being made even in these few cases.\"\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Joe Portney\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 0914025198\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9780914025191\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Starpath Publications\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 10\/21\/2009\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 170\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.38lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 8.00h x 5.00w x 0.36d","brand":"Joe Portney","offers":[{"title":"Paperback","offer_id":44130148122879,"sku":"9780914025191","price":9.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_2cc6dced-f104-4496-a5c8-9926255ad3c7.jpg?v=1687467825","url":"https:\/\/www.whiterainbookhouse.com\/products\/portneys-ponderables-joe-portney-9780914025191","provider":"WR Book House","version":"1.0","type":"link"}