00350nam a2200133 a 450000500170000000800410001702000150005804100080007308200080008110000210008924500500011026400380016030000180019820260717092100.0260717s1985    ii            000 0 eng d  a0071002316  aeng04a6281 aPeavy Haward, S.10aEnvironmental Engineering /cPeavy Haward, S. 1aNew Delhi :bMacGraw Hill,c1985.  axiv,699p.+I20