جزئیات کتاب
فرمت
کیندل
صفحات
70
زبان
انگلیسی
منتشر شده
Jul 11, 2012
ناشر
Free Spirit Enterprises LLC
توضیحات
Information about conserving the air in your scuba diving tank. E-book for using breathing, equipment selection, and gear trimming techniques for longer scuba diving adventures. Save scuba air - make your dives last longer.