Gray, J. Forest Concession Policies and Revenue Systems. Washington: The World Bank, 2002 XII, 107 с. 0-8213-5170-2.
Gray, J. Forest Concession Policies and Revenue Systems. Washington: The World Bank, 2002 XII, 107 с. 0-8213-5170-2.
Gray, J. (2002) Forest Concession Policies and Revenue Systems, Washington: The World Bank XII, 107 с. 0-8213-5170-2.
Gray, J. (2002). Forest Concession Policies and Revenue Systems. Country Experience a. Policy Changes for Sustainable Tropical Forestry. Washington: The World Bank, XII, 107 с.
Gray J. Forest Concession Policies and Revenue Systems: Country Experience a. Policy Changes for Sustainable Tropical Forestry. Washington: The World Bank; 2002. p. XII, 107 с. ISBN: 0-8213-5170-2.