00562nam a22001697a 4500003000900000005001700009008004100026040003300067086001400100100003000114110003800144245005100182260006600233300001700299504005100316650002500367BD-DhIDS20261105104652.0261104s1950    pk ||||| |||| 00| 0 eng d  aBD-DhIDScBD-DhIDSdBD-DhIDS  aPAK GSP 21 aHeron A. M. qA. M. Heron1 aThe Geological Survey of Pakistan00aDirectory of the Economic Minerals of Pakistan  aKarachi, Pakistan:bThe Geological Survey of Pakistan;c1953.  a70p.:c23cm.  aIncludes bibliographical references and index.04aGeologyxPeriodicals