Erowid Search Results for: synthesis of amphetamine
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- John Halpern : Letter in Support of John Halpern
- 'Letter in Support of John Halpern', by Neal M. Goldsmith, Ph.D.
- John Halpern : Documents and links related to John Halpern Controversy
- A list of links related to the controversy over John Halpern's involvement in psychedelic research