Child and youth welfare. Publik debt 1914-1946 Bulletin on narcotics Pergumulan dikala duka / Tony Lake ; penerjemah, Suciati Lake Malai [peta] / Direktorat Geologi Proceedings of the United Nations Scientific Conference on the conservation and utilization of resources, 17 August-6 September 1949, Lake Success, New York.v. I,plenary meetings.Proceedings of the United Nations Scientific Conference on the conservation and utilization of resources, 17 August-6 September 1949, Lake Success, New York. v. II. mineral resourcesProceedings of the United Nations Scientific Conference on the conservation and utilization of resources, 17 August-6 September 1949, Lake Success, New York. v. v, forest resourcesProceedings of the United Nations Scientific Conference on the conservation and utilization of resources, 17 August-6 September 1949, Lake Success, New York. v. iv, water resourcesProceedings of the United Nations Scientific Conference on the conservation and utilization of resources, 17 August-6 September 1949, Lake Success, New York.v. III, fuel and energy resources