Foreword
General Considerations on the Problem of Coca-Leaf Chewing
Psychological Aspects of Coca Addiction
The Coca Question in Bolivia
Limitation of the Production of Coca Leaf in Bolivia
The Coca-Leaf Problem in Colombia
The Disappearance of Cocaism in Ecuador
The Problem of the Chewing of the Coca Leaf in Peru
Note on the Total Synthesis of Morphine
Legal Trade in Narcotics in 1950