{"product_id":"2940012756640","title":"UTD Student \u0026 Diver Procedures #19 - Battlefield Calculation","description":"This is a sub book, # 19, of the more extensive UTD Student and Diver Procedures Manual. In this sub-book we discuss UTD\/DIR skills and procedures and the relevant physics and gas laws needed to do quick math and the variety of  easy to remember formulas and principals to be able to do \"on the fly\" scuba-math. We cover everything from gas planning and management, to O2 toxcity to  blending and mixing breathing gases.","brand":"UTD International LLC","offers":[{"title":"Default Title","offer_id":47152555327728,"sku":"2940012756640","price":9.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/2940012756640_p0.jpg?v=1763572225","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/2940012756640","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}