TY  - BOOK
ED  - California State University
TI  - Small Water system operation and maintenance
SN  - 1-884701-15-9
U1  - 628.16 
PY  - 1995///
CY  - U.S.A.
PB  - U. S. Enviromental protection agency
KW  - Agua
KW  - Tratamiento
N1  - BIBLIOTECA: UACH-FCQ
ER  -