Figure 4. Input-output variables of value addition processes

From

Eco-Efficiency of Metallurgical Value Added Process Facilities for Sustainable Production

A. Ayyakkannu P.S. Kumar, P.C. Naganoor Basavaraj Hatti

Applied Ecology and Environmental Sciences. 2020, 8(6), 505-508 doi:10.12691/aees-8-6-24