Lofty, G. J., Hillier, J. A., Cooke, S. A., Hale, P. I., Linley, K. A., & Singh, H. R. (1991). World mineral statistics 1985-89: Production; exports; imports. British Geological Survey.
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Chicago Style (17th ed.) Citation
Lofty, G. J., J. A. Hillier, S. A. Cooke, P. I. Hale, K. A. Linley, and H. R. Singh. World Mineral Statistics 1985-89: Production; Exports; Imports. Keyworth, Nottingham: British Geological Survey, 1991.
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MLA (9th ed.) Citation
Lofty, G. J., et al. World Mineral Statistics 1985-89: Production; Exports; Imports. British Geological Survey, 1991.
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Warning: These citations may not always be 100% accurate.