1-7 of 7 Books
Plantae Colombianae
Plantae Colombianae
By Richard Evans Schultes

Die chemische Werthbestimmung einiger starkwirkender Droguen
By G. Dragendorff
A partial revision of Paullinia (Sapindaceae) for Ecuador, Peru, and Bolivia
A partial revision of Paullinia (Sapindaceae) for Ecuador, Peru, and Bolivia
By Donald Ray Simpson

A partial revision of Paullinia (Sapindaceae) for Ecuador, Peru, and Bolivia, part I
By Donald Ray Simpson
El Yoco (Paullinia yoco)
El Yoco (Paullinia yoco)
By Germán Zuluaga