( b) That during the period of the Fund's existence, as provided in paragraph 6 ( e), the Board, in accordance with such principles as may be laid down by the Economic and Social Council and its Social Commission, shall, with due regard to the urgency of the needs and available resources, formulate the policies, determine the programmes and allocate the resources of the Fund for the purpose of meeting, through the provision of supplies, training and advice, emergency and long-range needs of children and their continuing needs particularly in under-developed countries, with a view to strengthening, wherever this may be appropriate, the permanent child health and child welfare programmes of the countries receiving assistance;