by C. W. Ballard
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The elements of vegetable histology
A history of the College of Pharmacy, Co...
Beiträge zur Kenntniss der Gattung Eryth...
The botanical origin of coca leaves
El genero Erythroxylon en el Peru
La hoja increíble
Gas chromatographic analysis of cocaine ...
Ten new species of Erythroxylum (Erythro...