PARSAKHOO, Aidin, Seyed Ataollah HOSSEINI, Majid LOTFALIAN, and Hamid JALILVAND. 2019. “Bulldozer and Hydraulic Excavator Traffi C Effect on Soil Bulk Density, Rolling Project and Tree Root Response”. International Journal of Natural and Engineering Sciences 2 (3):135-38. https://ijnes.org/index.php/ijnes/article/view/419.