SURFACE MINING TECHNOLOGY IN THE ZONES OF TECTONIC DISTURBANCES, ESTONIAN OIL SHALE DEPOSIT
2022 ◽
1990 ◽
Vol 4
(3)
◽
pp. I-I
1991 ◽
Vol 28
(5)
◽
pp. 318-319
1974 ◽
Vol 11
(11)
◽
pp. A225