A study of factors which influence the mechanical properties of deep permafrost
Date: 1973-01-01
Date: 1973-01-01
Date: 1970-01-01
Date: 1982-01-01
Date: 1978-01-01
Date: 1971-01-01
Date: 1983-01-01
Date: 1982-01-01
Date: 1973-01-01
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