TY - BOOK ED - American Petroleum Institute, API TI - Manual of petroleum measurement standards. Chapter 9.1: Standard test method for density, relative density, or API gravity of crude petroleum and liquid petroleum products by hydrometer method U1 - Carpeta IV PY - 2012/// CY - Washington PB - American Petroleum Institute, API KW - Normalización KW - Normas API KW - Densidad KW - Densidad relativa N1 - Equivalente a la norma: ASTM D1298-12b ER -