A glimpse of horizontal directional drilling productivity factorsMohd Norizam Salleh, Nuzul Azam Haron, Helmi Zulhaidi Mohd Shafri, Abdul Aziz Abdullah and Nadzrol Fadzilah AhmadMATEC Web Conf., 250 (2018) 05006DOI: https://doi.org/10.1051/matecconf/201825005006
