Figure 4. Natural gas reserves in 5 superior countries in 1980-2013 periods [12]

From

Providing an Example of Scheduling Model for Marine Transportation Companies

Abdollaah Ardeshir, Aliakbar Safaei, Shahryar Abtahi

American Journal of Civil Engineering and Architecture. 2016, 4(5), 165-170 doi:10.12691/ajcea-4-5-3