00575ctaaa2200181 a 450000500170000000800410001703500150005810000190007324500820009224600430017426000240021730000150024150000620025665000140031865000230033270000210035570000170037620260818212728.0090625s1976    xx                  eng d  a.b120615781 aCook, David J.10aRice husk ash as a pozzolanic materials /cby ..., R. P. Pama and S. A. Damer30aNew horizons in construction materials  aS.l. :bs.n.,c1976  a431-442 p.  aProc. Symposium on New Horizons in Construction Materials 0aRice husk 0aBuilding materials1 aPama, Ricardo P.1 aDamer, S. A.