@article{1640048, url = {http://digitallibrary.un.org/record/1640048}, title = {The problem of synthetic narcotic drugs : chemical aspects of synthetic substances with morphine-like effect}, publisher = {UN,}, recid = {1640048}, pages = {36 p.}, address = {[New York] :. 1954-03-10}, year = {1954}, month = {Mar}, }