00397nam a2200109Ia 450000500170000008000190001724501430003626000290017930000140020850000440022258300210026620260716044020.0  a04.01.02 G9862  aGuyana standard : code of practice for the design and construction of septic tanks and associated secondary treatment and disposal systems  bGNBSaGeorgetownGYc2007  aiv, 26 p.  aApproved by National Standards Council.  c3/12/12kSANDRAW