Research and development is the guarantee of oil shale's futurePirk, KalleEstonian oil shale industry yearbook 20162017 / p. 5 : portrhttps://www.ester.ee/record=b5266187*est
The key for industrial development is ensuring a future workforcePirk, KalleEstonian oil shale industry yearbook 20182019 / p. 5 : portrhttps://www.ester.ee/record=b5266187*est