Varnes, K. L. (1982). Conditional estimates and marginal probabilities for undiscovered recoverable oil and gas resources by province: Statistical background data for U. S. Geological Survey circular 860.
Chicago Style CitationVarnes, Katharine L. Conditional Estimates and Marginal Probabilities for Undiscovered Recoverable Oil and Gas Resources By Province: Statistical Background Data for U. S. Geological Survey Circular 860. 1982.
MLA CitationVarnes, Katharine L. Conditional Estimates and Marginal Probabilities for Undiscovered Recoverable Oil and Gas Resources By Province: Statistical Background Data for U. S. Geological Survey Circular 860. 1982.
Warning: These citations may not always be 100% accurate.