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1: Soil 2: Community 3: Article 4: Lactation 5: Maximum mid-expiratory flow rate 6: Climate 7: Caterpillar 8: Japan 9: Feeder 10: Carbon 11: Change 12: Treatment 13: Function 14: Characteristic 15: Particle 16: Unconfined ground water 17: Periplaneta americana 18: Potential 19: Development 20: Conservation (As of 16:15)
API is the shortcut for American Petroleum Institute