specified in the Comprehensive Peace Agreement and the Interim Constitution of Southern Sudan. Cooperation between National and Southern Sudan Land Commissions 189 (1) The National Land Commission and Southern Sudan Land Commission shall co-operate and co-ordinate their activities so as to use their resources efficiently. (2) The National Land Commission and the Southern Sudan Land Commission shall agree:(a) to exchange information and decisions of each other, (b) on how to resolve conflict between their findings or recommendations. (3) The Southern Sudan Land Commission may carry out certain functions of the National Land Commission, including collection of data and research. (4) In the case of conflict between the findings or recommendations of the National Land Commission and Southern Sudan Land Commission which cannot be resolved or reconciled by agreement pursuant to sub-Article (2) (b ) above, the matter shall be referred to the Constitutional Court. CHAPTER III DEVELOPMENT AND MANAGEMENT OF THE PETROLEUM SECTOR The Framework for Petroleum Management 190 The basis for a definitive framework for the management and development of the petroleum sector shall include:(a) sustainable utilization of oil as a non-renewable natural resource consistent with:(i) the national interest and the public good, (ii) the interest of the affected states, (iii) the interest of the local population in affected areas, (iv) national environmental policies, biodiversity conservation guidelines and cultural heritage protection principles, 78