cretec.org.gt€¦ · 8.3 ASTM D-287: "Standard Test Method for API Gravity of Crude Petroleum...
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cretec.org.gt€¦ · 8.3 ASTM D-287: "Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer Method)" Método de Prueba Estándar para Gravedad