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- [26] Environmental radiation levels in central Florida's phosphate mining district JOURNAL OF EXPOSURE ANALYSIS AND ENVIRONMENTAL EPIDEMIOLOGY, 1998, 8 (02): : 207 - 212
- [28] Dissolution characteristics of central Florida phosphate rock in an acidic sandy soil Plant and Soil, 2005, 273 : 157 - 166
- [30] THE HISTORY AND DEVELOPMENT OF PHOSPHATE ROCK MINING TRANSACTIONS OF THE AMERICAN INSTITUTE OF MINING AND METALLURGICAL ENGINEERS, 1951, 190 (08): : 708 - 712