George E. King Engineering, 5000 Oilfield Terms: A Glossary of Petroleum Engineering Terms, Abbreviations and Acronyms, US 2010. http://gekengineering.com/Downloads/Free_Downloads /Glossary_of_Petroleum_Engineering_Terms_25_August _2010.pdf, (Oil - Amer) {593}
EESiFlo North America, Terminology and Glossary: Water Terminology, Pennsylvania, USA 2002. flowmeterdirectory.com/flowmeter_terminology, (Wtr - Amer) {580}