DDT ndi gulu la Soviet ndi Russia lomwe linakhazikitsidwa mu 1980. Yuri Shevchuk akadali woyambitsa gulu la nyimbo ndi membala okhazikika. Dzina la gulu loimba limachokera ku mankhwala a Dichlorodiphenyltrichloroethane. Mu mawonekedwe a ufa, ankagwiritsidwa ntchito polimbana ndi tizilombo towononga. Kwa zaka za kukhalapo kwa gulu loimba nyimbo zasintha zambiri. Abwanawo adawona […]