Chen, Maggie Xiaoyang Regionalism in standards : good or bad for trade / Maggie Xiaoyang Chen & Aaditya Mattoo - Washington, D.C. : The World Bank (WB) , 2004 - 37p. : ill. ; 25 cm. - Policy research working paper NO. 3458 . Subjects--Topical Terms: TradeStandardsRegional cooperation Gov. Doc. Class. No.: UN WB PRWP-3458