Low-cost science and technology materials at the senior middle school lower grades level; examples of national institutions of Democratic People's Republic of Korea, People's Republic of China and Brasilia; 1990  
Low-cost science and technology materials at the senior middle school lower grades level; examples of national institutions of Democratic People's Republic of Korea, People's Republic of China and Brasilia; 1990

Creators:    Korea DPR. Ministry of Foreign Affairs; Korea DPR. National Commission for UNESCO Keywords:    science education; teaching materials; secondary education; teaching guides