00278nam a22001097a 4500082001300000100001600013245006600029260002900095300001300124526001900137650001200156  aP-179cD  aAhmad Munir  aDewatering by subsurface drainscahmad munir, kashif hussain.  aNust MCEbMCEc13/3/2001  aDc40cm.  a0b0c0dP_179  aProject