TY  - BOOK
ED  - Symposium on the Recovery of Indicator Organisms Employing Membrane Filters 
ED  - Estados Unidos. 
ED  - 
TI  - Proceedings of the Symposium on the Recovery of Indicator Organims Employing Membrane Filters / 
T2  - Research Reporting series
U1  - 576 
PY  - 1977///
CY  - Cincinnati, Ohio : 
PB  - United States Environmental Protection Agency, Office Research and Development, Environmental Monitoring and Support Laboratory, 
ER  -