@article {75,
	title = {AN INTRODUCTION TO THE PTERIDOPHYTE FLORA OF FINCA LA SELVA, COSTA-RICA},
	journal = {American Fern Journal},
	volume = {77},
	number = {3},
	year = {1987},
	note = {Times Cited: 13 13},
	pages = {73-89},
	type = {Journal Article},
	issn = {0002-8444},
	doi = {10.2307/1547496},
	url = {<Go to ISI>://WOS:A1987M413300001},
	author = {Grayum, M. H. and Churchill, H. W.}
}
@article {76,
	title = {THE VASCULAR FLORA OF LA SELVA BIOLOGICAL STATION COSTA RICA LYCOPODIOPHYTA},
	journal = {Selbyana},
	volume = {11},
	year = {1989},
	pages = {61-65},
	type = {Journal Article},
	issn = {0361-185X},
	url = {<Go to ISI>://BCI:BCI199039034507},
	author = {Grayum, M. H. and Churchill, H. W.}
}
@article {77,
	title = {THE VASCULAR FLORA OF LA SELVA BIOLOGICAL STATION COSTA RICA POLYPODIOPHYTA},
	journal = {Selbyana},
	volume = {11},
	year = {1989},
	note = {5},
	pages = {66-118},
	type = {Journal Article},
	issn = {0361-185X},
	url = {<Go to ISI>://BCI:BCI199039034508},
	author = {Grayum, M. H. and Churchill, H. W.}
}
