Dzvanya vhidhiyo yacho kuti utarise Professor John Whitehall vachitaura (chete neChirungu) kana tinya chinyorwa uye uverenge zvavanotaura mumutauro wako. A pdf inogona kuridzwa. Rakanyorwa neChirungu asi isu takapa chinongedzo kwaunogona kuisa pdf nekuchidudzira kumutauro wako.