RT Book, Section SR Electronic(1) A1 United Nations YR 2019 T1 Other business services (EBOPS code 268) T2 International Trade Statistics Yearbook 2017, Volume II PB United Nations SN 9789210476539 DO 10.18356/ede6fc99-en UL https://www.un-ilibrary.org/content/books/9789210476539s006-c009