APED. Advances in Petroleum Exploration and Development - 2012
v. 3 : no. 1 (2012: Mar. 31)
v. 3 : no. 2 (2012: June 30)
v. 4 : no. 1 (2012: Sept. 30)
v. 4 : no. 2 (2012: Dec. 31)