title: A photoelectric colorimeter for estimating protozoan population densities.
authors.forename: A M
authors.initials: AM
authors.lastname: ELLIOTT
mesh_terms: D000818:Animals; D003124:Colorimetry; D056890:Eukaryota; D007448:Invertebrates; D008853:Microscopy / Q000295:instrumentation*; D011156:Population Density
keywords: MICROSCOPY/apparatus; PROTOZOA