Monday, November 19, 2012

unit-4 geo-science

unit-4 geo-science

rock and their formation
rock and their formation

gems and gemstones
gems and gemstones

hydro-carbon and minerals
minerals

coal
coal

deformation of rock
deformation of rock

mining
mining

rock and their deformation
rock and their deformation

minerals and geological exploration
minerals and geological exploration

tunneling
tunneling


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