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称1翔关于召开全国贫困山’区经济开发学术讨论会的第l号通告·········,···……;..·....……·,.·...。······4··········...··············……全国贫困山区经济开发学术讨论会痔备小组(1)山地地貌学进展与山地治理······
Said 1 Xiang on the National Poverty Hill ’area economic development seminar No. l notice ··············································································································; ... ··············································································· 4 ······················································································ 4 ···················································· ...... Progress in Mountain Geomorphology and Mountain Management ····