RT Book, Section SR Electronic(1) A1 United Nations YR 2004 T1 Production, trade and consumption of lignite T2 Energy Statistics Yearbook 2001 PB United Nations SN 9789210479103 DO 10.18356/984d061d-en-fr UL https://www.un-ilibrary.org/content/books/9789210479103s008-c004