@misc{indiciae01f9b1c7a0ce, title = {Letters to the editor: A modified method for testing marijuana.}, author = {U PE}, year = {1974}, doi = {10.1016/0300-9432(74)90120-4}, url = {https://pubmed.ncbi.nlm.nih.gov/4461458/}, note = {Source identifier: 4461458} }