@article {6537,
	title = {Die Pteridophyten der Elbert{\textquoteright}schen Sunda-Expedition},
	journal = {Med.Rijksherb.Leiden},
	volume = {70},
	year = {1933},
	note = {IN FILE},
	pages = {3-27},
	keywords = {Celebes},
	author = {Posthumus, O.}
}
