TY  - BOOK
AU  - Farnsworth,Norman,R.
TI  - The pharmacognosy of the periwinkles: Vinca and catharanthus
UR  - https://drive.google.com/file/d/1yw_1LHE1oPvsew-8F0mYMwyL1qLITVQ6/view?usp=drivesdk
ER  -