@mastersthesis {goodfriend_clinal_1983,
	title = {Clinal variation and natural selection in the land snail \textit{Pleurodonte lucerna in western St. Ann Parish, Jamaica},
	year = {1983},
	school = {University of Florida},
	type = {phdDoctoral},
	address = {Gainesville, Florida},
	keywords = {denticles},
	url = {http://www.biodiversitylibrary.org/bibliography/121810},
	author = {Goodfriend, Glenn A.}
}
