title: PHOTOPERIODIC RESPONSES OF CERTAIN GREENHOUSE ANNUALS AS INFLUENCED BY INTENSITY AND WAVELENGTH OF ARTIFICIAL LIGHT USED TO LENGTHEN THE DAYLIGHT PERIOD.
authors.affiliation: Purdue University, West Lafayette, Indiana.
authors.forename: R B
authors.initials: RB
authors.lastname: Withrow
authors.forename: H M
authors.initials: HM
authors.lastname: Benedict