1 |
J. F. Papp: USGS, Mineral Commodity Summaries, (2013) 43.
|
2 |
J. F. Papp: USGS, Mineral Commodity Summaries, (2006) 49.
|
3 |
J. F. Papp: USGS, Mineral Commodity Summaries, (2008) 49.
|
4 |
J. F. Papp: USGS, Mineral Commodity Summaries, (2010) 43.
|
5 |
J. F. Papp: USGS, Mineral Commodity Summaries, (2012) 43.
|
6 |
J. F. Papp: USGS, Minerals Yearbook, Chromium[Advance release], (2011) 17.
|
7 |
NLIC, Framework act on environmental policy "National Legal Information Center, (2008).
|
8 |
J. G. Kim: Conservation and Recycling, 77 (2013) 24.
|
9 |
P. T. Jone: JOM, 63 (2011) 13.
|
10 |
J. Rowe: International Stainless Steel Forum(ISSF), Brussels, (2014) 14.
|
11 |
S. K. Chung: Int. Jnl of Precision Engineering and Manufacturing, 11 (2010) 992.
|
12 |
J. F. Popp: Chromium life cycle study, (1994) 39.
|
13 |
The bank of Korea, Input coefficients of inter-industry relation table, (2009).
|
14 |
NLIC Radioactive waste control act, National Legal Information Center, (2008).
|
15 |
NLIC Clean air conservation act, National Legal Information Center, (1995).
|
16 |
NLIC, Soil environment conservation act, National Legal Information Center, (1995).
|
17 |
J. F. Popp: Chromium life cycle study, (1994) 37.
|
18 |
I. S Lee: Int. Jnl. of Precision Engineering and Manufacturing- Green Technology, 1 (2014) 147.
|