RT Book, Section SR Electronic(1) A1 United Nations Office for Outer Space Affairs YR 2019 T1 Benefits to users T2 The Interoperable Global Navigation Satellite Systems Space Service Volume PB United Nations SN 9789210474405 DO 10.18356/63e9fd2d-en UL https://www.un-ilibrary.org/content/books/9789210474405c003