@book{112491,
	author = {Cibes, Héctor. and Samuels, George},
	title = {Mineral-deficiency symptoms displayed by dracaena godseffiana and dracaena sanderiana grown under conrolled conditions},
	publisher = {University of Puerto Rico, Agricultural Experiment Station},
	year = {1960.},
	series = {P.R. Estación Experimental Agrícola, Río Piedras. Technical paper, 29},
	address = {Río Piedras, P.R.},
	note = {Includes an English summary.}
}