Periodicals -- 2 Appropriate technology -- 1 Astronautics and state -- 1 Consulting engineers -- 1 Directories -- 1 Economic development -- 1 Energy industries -- 1 more ... Environment -- 1 Geochemical prospecting 1 Geology 1 Milling -- 1 Noodles -- 1 Organic geochemistry 1 Petroleum -- 1 Power resources -- 1 Processing -- 1 Space race -- 1 Sustainable development -- 1 Technological innovations -- 1 Technology and state -- 1 Wheat -- 1 less ...