00248nam a22000977a 4500082002900000100001600029245002600045260003400071526003700105650000800142  a620.112bAKHcL-21, P-55  aAkhatr, M.S  aStrength of Materials  aLahore:bNational Book Stall,  a0b0c0d620_112000000000000_AKH  aMCE