00870nam a22001817a 4500003000600000005001700006008004100023040000800064050001700072110011100089245015800200260008800358300006800446500002700514501010800541650002100649650001800670AUA.120151214132308.0121112t        xxu||||| |||| 00| 0 eng d  cJTL  aTD 407b.M36  aUnited States. Environmental Protection Agency. Office of Water Supply.;bNational Water Well Association.  aManual of water well construction practices. /cUnited States. Environmental Protection Agency. Office of Water Supply.; National Water Well Association.  aWashington :bU.S. Environmental Protection Agency, Office of Water Supply,c[1976]  a156 p. :billustrations, graphs (3 leaves in pocket) ; c24 cm.  a"EPA -- 570/9-75-001."  a"Prepared under the auspices of the National Water Well Association Committee on Water Well Standards."  aWellsxStandards  aUnited States