Smith, J., & Umali, G. (1984). Fertilizer recommendations based on soil-nitrogen levels - a total nutrient model. Wiley.
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Chicago Style (17th ed.) Citation
Smith, Joyotee, and Gloria Umali. Fertilizer Recommendations Based on Soil-nitrogen Levels - a Total Nutrient Model. Wiley, 1984.
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MLA (9th ed.) Citation
Smith, Joyotee, and Gloria Umali. Fertilizer Recommendations Based on Soil-nitrogen Levels - a Total Nutrient Model. Wiley, 1984.
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Warning: These citations may not always be 100% accurate.