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меловая породаstresses
geol. Cretaceous rock (MichaelBurov)
Gruzovik, topogr. chalk layer
O&G chalky rock
oil chalk rock; chalk robbing
меловая порода: 10 phrases in 6 subjects
Geology3
Geophysics2
Makarov1
Oil and gas2
Oilfields1
Technology1