TY - BOOK AU - Foster,Timothy R.V. TI - Upgrading your airplane's avionics SN - 9780830696208 (hbk.) U1 - 629.1350288 FOS PY - 1981/// CY - Blue Ridge Summit, Pa. PB - Tab Books KW - Airplanes KW - Electronic equipment N1 - Gratis Lalitha Janakiraman $9.95 ER -