TY - GEN TI - Standard methods for the examination of water and wastewater SN - 0-87553-235-7 PY - 1998/// CY - [S.l.] PB - American Public Health Association, American Water Works Association, Water Enviorenment Federation KW - Saude publica KW - Analises aguas KW - 543.3 KW - 20.ed KW - STA ER -