00382nam a2200109Ia 4500008004100000041000800041082001600049100002300065245013300088260003200221300001900253241028s9999    xx            000 0 und d  aeng  a519.536 POR  aPorto Massimiliano  aUsing R For Trade Policy Analysis: R Codes For The Unctad And Wto Practical Guide R Codes For The Unctad And Wto Practical Guide  bSpringeraSwitzerlandc2023  a163;. P. 21 cm