Aston, R. L. (1999). The legal, engineering, environmental, and social perspectives of surface mining law and reclamation by landfilling: Getting maximum yield from surface mines. London : River Edge, NJ: Imperial College Press ; Distributed by World Scientific Pub..
Dyfyniad Arddull ChicagoAston, Robert Lee. The Legal, Engineering, Environmental, and Social Perspectives of Surface Mining Law and Reclamation By Landfilling: Getting Maximum Yield From Surface Mines. London : River Edge, NJ: Imperial College Press ; Distributed by World Scientific Pub., 1999.
Dyfyniad MLAAston, Robert Lee. The Legal, Engineering, Environmental, and Social Perspectives of Surface Mining Law and Reclamation By Landfilling: Getting Maximum Yield From Surface Mines. London : River Edge, NJ: Imperial College Press ; Distributed by World Scientific Pub., 1999.