Kusayinwe nge "contact-time"

Ishejuli Yesikole Isikhathi Se-CAPS: Iqondiso Lezikole Zase-SA

Isikhathi se-CAPS seshejuli yesikole e-SA: amahora ngesifundo ngesigaba, amaphutha okuhlela, ngesandla vs isofthiwe. Amashejuli ahambisana ne-DBE.