Diggelen, Frank Van A GPS assisted GPS, GNSS, and SBAS Frank Van Diggelen - Boston Artech House Inc. 2009 - xviii+380p. illus., fig., photos, index ISBN: 978-1-59693-374-3 Subjects--Topical Terms: GpsGnssGpsSbas Universal Decimal Class. No.: 629.783:528.2 / DIG