00411nam a2200121Ia 4500 241015s9999 xx 000 0 und d eng 519.536 POR Porto Massimiliano Using R For Trade Policy Analysis: R Codes For The Unctad And Wto Practical Guide R Codes For The Unctad And Wto Practical Guide Springer Switzerland 2023 163;. P. 21 cm 41692 41692