00328cam a2200121ua 4500041001000000082001600010100001800026245008600044250001200130260004700142300001200189504000500201  aengh  a691bNAI/EN  aNaidu, D S  .  aEngineering materials and their testing, Part 1 / cD S Naidu.hTextual Documents  a1 / b.  aMumbai : bAsia Publishing House , c1964.  a232 ; .  a