TY  - RPRT
TI  - Methods for collection and analysis of aquatic biological and microbiological samples
AU  - T. A. Ehlke
AU  - G. A. Irwin
AU  - B.W. Lium
AU  - K. V. Slack
PY  - 1977
DO  - 10.3133/twri05a4_1977
UR  - https://pubs.usgs.gov/publication/twri05A4_1977
ID  - twri05A4_1977
ER  -