00391nam a22001217a 4500082000900000100003200009245014000041260001400181300001300195526001800208650001100226700003200237  aT-66  aParvez Iqbal Sulehri, Major  aA laboratory investigation to study the variation in strength of commercial brand ordinary portland cementscMajor Parvez Iqbal Sulehri  aMCEc1997  a156 P, :  a0b0c0dT_66  aThesis  aLt Col (Dr) Nasrullah Abeer