Yazar
ivan mladenov todorov
1 cilt bulundu.
Cilt sonuçları
Postizhenii͡a︡ na naukata i tekhnicheskii͡a︡ progres v Narodna Republika Bŭlgarii͡a︡
Ivan Mladenov Todorov · Dŭrzh. Izd-vo "Tekhnika,"
157 sayfa · 1982
Science / Technological innovations / Technology