Prehistoric remains of the sweetpotato from the Casma valley of Peru [Ipomoea batatas]. Ugent, D., Pozorski, S., & Pozorski, T. Phytologia, 49:401–415, 1981.
Prehistoric remains of the sweetpotato from the Casma valley of Peru [Ipomoea batatas]. [link]Paper  bibtex   
@article{ugent_prehistoric_1981,
	title = {Prehistoric remains of the sweetpotato from the {Casma} valley of {Peru} [{Ipomoea} batatas].},
	volume = {49},
	url = {https://www.biodiversitylibrary.org/page/12994245},
	journal = {Phytologia},
	author = {Ugent, Donald and Pozorski, Shelia and Pozorski, Thomas},
	year = {1981},
	pages = {401--415},
}
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