ArchiveVolume 3, Issue 6, December 2014
Peng Liu, Ying Huang
Pages: 132-136     Published Online: Dec. 22, 2014
DOI: 10.11648/j.earth.20140306.11        Views 2466      Downloads 132
Patrick Shawn Sawyer, Haroon Stephen
Pages: 137-146     Published Online: Jan. 6, 2015
DOI: 10.11648/j.earth.20140306.12        Views 2224      Downloads 96
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