TY - GENERIC DO - 10.20944/preprints201705.0213.v2 UR - http://dx.doi.org/10.20944/preprints201705.0213.v2 TI - Analysis of the Quantity and Average Age of Copper in-Use Stock in the U.S. from 1985 to 2014 T2 - Preprints AU - Wang, Minxi AU - Liang, Yanan AU - Chen, Wu AU - Li, Xin PY - 2017 DA - 2017/06/02 PB - Preprints