Relatiewe digtheid: Verskil tussen weergawes
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Lyn 84:
== Eksterne skakels ==
* [http://www.engineeringtoolbox.com/density-specific-weight-gravity-d_290.html Density, Specific Weight and Specific Gravity], [http://www.engineeringtoolbox.com/ Engineering Toolbox]
* [https://gpaglobal.org/ GPA Midstream Association]
== Voetnotas ==
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