Varangis, Panayotis N. Is there a commercial case for tropical timber certification? by Panayotis N. Varangis, Rachel Crossley, Carlos A. Primo Braga - Washington, DC World Bank 1995 - 33p. - Policy research working paper 1479 . Subjects--Topical Terms: Timber --Economic aspects --TropicsTimber --Certification --Tropics