Hazchem plate
JF-Expert Member
- Feb 25, 2011
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Wakuu mwenye uelewa na mfumo huu naomba aweke wazi. Maana kuna mkanganyiko mkubwa sababu veta wanatumia Levels na grades.
Kama kuna mtu anajua equivalents za levels na grades vizuri atuambie
Kama kuna mtu anajua equivalents za levels na grades vizuri atuambie