January 2013 crude steel production

Wiley | 2013

March 2014 crude steel production

Wiley | 2014

Environmental Engineering Research in June 2011

Seo, D. | British Library Online Contents | 2011

2011 5th International Association for China Planning conference (IACP 2011) : Beijing, China, 17 - 19 June 2011

TIBKAT | 2011

Official conference proceedings - the 2011 International Bridge Conference : June 5 - 8, 2011, Pittsburgh, PA, USA

Engineers Society of Western Pennsylvania / American Road and Transportation Builders Association | TIBKAT | 2011