TY - BOOK ED - United Nations Conference on Trade and Development. Trade and Develo pment Board. TI - Review of the implementation, maintenance, improvement and utilizati on of the generalized system of preferences : : sixth general report o n the implementation of the generalized system of preferences PY - 1993/// CY - Geneva : PB - United Nations, KW - Business KW - Development N1 - Twentieth session, Geneva, 10 May 1993, item 3 of the provisional ag enda ER -