00414cam a2200121ua 4500041001000000082001600010100003600026245013600062250001200198260006500210300001200275504000500287  aengh  a691bCEN/BU  aCentral Building Research I,  .  aBuilding materials and components : Technology for developing countries / cCentral Building Research Institute.hTextual Documents  a1 / b.  aNew Delhi : bTata Mc-Graw Hill Publishing Company , c1990.  a240 ; .  a