Goh Tianwah. Guide to letters of credit / Goh Tianwah. - Singapore : Rank books, 1984 - 128 p. ; 21 cm. ISBN: 9971839474 Subjects--Topical Terms: Letters of creditLetter-writingBusiness writingCommercial correspondence Subjects--Geographic Terms: Singapore--Commerce Dewey Class. No.: 332.77 / G614G 1984