@article {497,
	title = {Dictionnaire des Sciences Naturelles, dans lequel on traite m{\'e}thodiquement des diff{\'e}rens {\^e}tres de la nature, consid{\'e}r{\'e}s soit en eux-m{\^e}mes, d{\textquoteright}apr{\'e}s l{\textquoteright}{\'e}tat actuel de nos connoissances, soit relativement {\`a} l{\textquoteright}utilit{\'e} qu{\'e}n peuvent retirer la m{\'e}deci},
	volume = {16},
	year = {1820},
	author = {Cassini, H.}
}
@article {373,
	title = {Plantae Rariores Horti Academici Monacensis},
	volume = {2},
	year = {1820},
	author = {Schrank, F. P.}
}
@article {222,
	title = {Flora},
	volume = {3(2)},
	year = {1820},
	author = {Weinm.}
}
@article {13,
	title = {Tekhno-Botanicheskii Slovar},
	year = {1820},
	author = {Martynov, I.I.}
}
