1. Major Chemical and Petrochemical Companies of the World (Major Chemical & Petrochemical Companies of the World (2 Vol.)) by Sandra James, Helen Johnson, Helen Porter, and Sue Ward (Jun 15, 2010)
  2. Miracle of Petrochemicals: Olefins Industry: An In-Depth Look at Steam-Krackers by Fahad H. Falqi (Aug 15, 2009)
    Note: replace K with C