@book{38866,
	author = {Gathercoal, Edmund N. and Wirth, Elmer Hauser,},
	title = {Pharmacognosy,},
	publisher = {Lea & Febiger,},
	year = {1947.},
	address = {Philadelphia,},
	edition = {2d ed., thoroughly rev.},
	note = {Based on the 3d ed. of Kraemer's Pharmacognosy.}
}