title: THE EFFECT OF LIGHT AND NITROGEN LEVELS ON GROWTH AND ALKALOID CONTENT OF YOUNG PLANTS OF CINCHONA LEDGERIANA.
authors.affiliation: FEDERAL EXPERIMENT STATION, U. S. DEPARTMENT OF AGRICULTURE, MAYAGUEZ, PUERTO RICO.
authors.forename: H F
authors.initials: HF
authors.lastname: Winters
authors.forename: A J
authors.initials: AJ
authors.lastname: Loustalot