TY  - RPRT
TI  - A supplement to "Methods for collection and analysis of aquatic biological and microbiological samples" (U.S. Geological Survey Techniques of Water-Resources Investigations, Book 5, Chapter A4)
PY  - 1979
DO  - 10.3133/ofr791279
UR  - https://pubs.usgs.gov/publication/ofr791279
ID  - ofr791279
ER  -