TY - BOOK T1 - Using GPS A1 - Dixon, Conrad LA - English PP - Dobbs Ferry, NY PB - Sheridan House YR - 1999 ED - 2nd ed. UL - https://ds.mainlib.upd.edu.ph/Record/UP-99796217603017619 OP - 112 CN - VK 562 D59 1999 SN - 1574090593 KW - Boats and boating. KW - Global Positioning System. ER -