Abbas, N., J. Q. Akhter, G. Khan, M. Alam, H. Khan, Y. Bano, M. Alam, S. ur Rehman, and A. Khan. “A Relationship of Physical Properties With Rock Strength Under Specific Geological Conditions for Limestone and Marble, Khyber Region: A Relationship of Physical Properties With Rock Strength Under Specific Geological Conditions for Limestone and Marble, Khyber Region”. International Journal of Economic and Environmental Geology, vol. 10, no. 4, Jan. 2019, pp. 14-18, doi:10.46660/ijeeg.v10i4.385.