157x Filetype PDF File size 0.81 MB Source: old-book.ru.ac.th
146 Source : Goh Cheng Leong., Human and Economic Geography. p. 454 -^ / I l major lead and zinc-producing district OV u~dsu;ar~~aara;nul;‘Lur?;nlA170 q rerlan Source : Goh Cheng Leong., Human and Economic Geography. p. 48s 148 Major producing districts of MajOr producing districts of l minganese 0 cobalt
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