| • standard substance | |
| मानक: criterion norm standard task high variety norms | |
| पदार्थ: material predicament ground subject matter | |
मानक पदार्थ अंग्रेज़ी में
[ manak padartha ]
| • standard substance | |
| मानक: criterion norm standard task high variety norms | |
| पदार्थ: material predicament ground subject matter | |
