Meyer, R. F. 1., Steele, C. T., & Olson, J. C. (1981). The future of heavy crude iols and tar sands: First International Conference, June 4-12, 1979, Edmonton, Alberta, Canada. New York, N.Y.: Mining Informational Services, McGraw-Hill.
Παραπομπή Chicago StyleMeyer, R. F. 1921-, C. T. Steele, and Jerry Chipman Olson. The Future of Heavy Crude Iols and Tar Sands: First International Conference, June 4-12, 1979, Edmonton, Alberta, Canada. New York, N.Y.: Mining Informational Services, McGraw-Hill, 1981.
Παραπομπή MLAMeyer, R. F. 1921-, C. T. Steele, and Jerry Chipman Olson. The Future of Heavy Crude Iols and Tar Sands: First International Conference, June 4-12, 1979, Edmonton, Alberta, Canada. New York, N.Y.: Mining Informational Services, McGraw-Hill, 1981.