RT Book, Section SR Electronic(1) A1 United Nations YR 2020 T1 Clasificación T2 Recomendaciones relativas al transporte de mercancías peligrosas PB United Nations SN 9789210041140 DO 10.18356/c5307cc9-es UL https://www.un-ilibrary.org/content/books/9789210041140s003-c002