Dajindian Map-sheet (I49E010020) Henan Institute of Geological Survey; Henan Polytechnic University 2010–2012 2 Guanzhuang Map-sheet (I49E019022) Biyang County Map-sheet (I49E020022) Pingshi Map-sheet (I49E021021) Madao Map-sheet (I49E021022) No.3 Institute of Geological & Mineral ...