Kohat

BILGRAMI, S.A., 1982, MINERAL INDUSTRY OF PAKISTAN, IN WHITMORE, F.C., JR., AND WILLIAMS, M.E., EDS., RESOURCES FOR THE TWENTY-FIRST CENTURY-- PROCEEDINGS OF THE INTERNATIONAL CENTENNIAL SYMPOSIUM OF THE UNITED STATES GEOLOGICAL SURVEY, HELD AT RESTON, VIRGINIA, OCTOBER 14-19, 1979, P. 168-178BILGRAMI, 1982, P. 174.