TY - BOOK AU - "United Nations,International Economic And Social Affairs(deptt of-)" ED - "United Nations,International Economic And Social Affairs(deptt of-)" TI - Methodologies for assessing the impact of deep sea-bed minerals on the world economy U1 - "X9(HZ).1.N8, M6/UN" PY - 1986/// CY - New PB - York United Nations USA KW - Minings ER -