00277nam a2200097Ia 4500080001800000245008300018260002500101300002600126500000800152583001900160  a09.05.08 G562  aAgreement on the global system of trade preferences among developing countries  b[s.n.]a[S.l.]c1988  a1 v. (various pagings  aIDS  c3/7/00kM2LMGR