TY - BOOK AU - Valdes,Alberto AU - Schaeffer,Barry ED - World Bank TI - Surveillance of agricultural prices and trade: a handbook for Colombia T2 - World Bank technical paper SN - 0821331175 PY - 1995/// CY - Washington, D.C. PB - The World Bank KW - Agricultural prices KW - Government policy KW - Colombia KW - Statistics KW - Farm produce KW - Produce trade ER -