NLM Digital Collections

Search

Search Constraints

Start Over You searched for: Formats Text Remove constraint Formats: Text Subjects Water Purification -- instrumentation Remove constraint Subjects: Water Purification -- instrumentation Subjects Water Supply -- standards Remove constraint Subjects: Water Supply -- standards

Search Results

1. Efficiency of standard Army water purification equipment and of diatomite filters in removing cysts of Endamoeba histolytica from water: for official action