https://species.wikimedia.org/wiki/Periploca_forrestii
Periploca forrestii - Wikispecies
wikispecies
https://www.jstage.jst.go.jp/article/cpb1958/36/6/36_6_2084/_article/-char/en
Studies on Chemical Constituents of Antitumor Fraction from Periploca sepium. IV. : Structures of...
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