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- [3] THE BLACKLAND SOILS OF NORTH-CAROLINA - THEIR CHARACTERISTICS AND MANAGEMENT FOR AGRICULTURE NORTH CAROLINA AGRICULTURAL RESEARCH SERVICE TECHNICAL BULLETIN, 1981, (270): : 1 - 70
- [6] GEOCHEMICAL EVIDENCE FOR SEDIMENT RECYCLING FROM NORTH-CAROLINA (USA) MINETTES CANADIAN MINERALOGIST, 1988, 26 : 133 - 141
- [10] FIRM-SPECIFIC EVIDENCE ON RACIAL WAGE DIFFERENTIALS AND WORKFORCE SEGREGATION AMERICAN ECONOMIC REVIEW, 1977, 67 (02): : 236 - 245