Wotchedwa Dmitry Pokrovsky ndi chuma cha Soviet Union. Pa moyo wake waufupi, adazindikira kuti anali wolemba, wosewera, mphunzitsi komanso wofufuza. Monga wophunzira, Pokrovsky anafika pa ulendo woyamba wa chikhalidwe cha anthu. Adakhala woyambitsa gulu loimba-laboratory […]