{"product_id":"portneys-ponderables-brain-teasers-for-navigators-paperback","title":"Portney's Ponderables: Brain Teasers for Navigators - Paperback","description":"\u003cp\u003eby \u003cb\u003eJoe Portney\u003c\/b\u003e (Author)\u003c\/p\u003e\u003cp\u003e\"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.\"\u003c\/p\u003e\u003cdiv\u003e\n\u003cstrong\u003eNumber of Pages:\u003c\/strong\u003e 170\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 0.36 x 8 x 5 IN\u003c\/div\u003e\u003cdiv\u003e\n\u003cstrong\u003ePublication Date:\u003c\/strong\u003e October 21, 2009\u003c\/div\u003e","brand":"Books by splitShops","offers":[{"title":"Default Title","offer_id":42734171521087,"sku":"9780914025191","price":17.2,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0105\/8226\/1823\/files\/1a0ac12468f28bfab5a2ff57b6c7e613.webp?v=1765138913","url":"https:\/\/dhlswag.com\/products\/portneys-ponderables-brain-teasers-for-navigators-paperback","provider":"BBB","version":"1.0","type":"link"}