Relief shown by contours and spot heights. Each sheet includes glossary, elevation guide, index to boundaries and index to adjoining sheets. Sheets individually numbered, e.g. Sheet 6029 IV S. Standard map series designation: L8020. Various editions of some sheets. Accompanied by: Index to pictomaps of Laos and Vietnam 1:25,000 (1 map : col. ; 46 x 22 cm.).
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