About POPOV I I
About SHPAKOV P S
About POKLAD G G
About OZHIGIN S G
About Izvestiya Vysshikh Uchebnykh Zavedenij. Gornyi Zhurnal
About open pit mining
About Open pit mining
About Mechanical properties of rocks
About 限界
About こう配
About 指標
About 安定性
About 係数
About 計算