title: The Standardization of Poa Annua as an Indicator of Smog Concentrations. I. Effects of Temperature, Photoperiod, and Light Intensity during Growth of the Test-Plants.
authors.affiliation: LOS ANGELES COUNTY AIR POLLUTION CONTROL DISTRICT, LOS ANGELES.
authors.forename: M
authors.initials: M
authors.lastname: Juhrén
authors.forename: W
authors.initials: W
authors.lastname: Noble
authors.forename: F W
authors.initials: FW
authors.lastname: Went