@article{364050, note = {At head of title: UN International Drug Control Programme.}, url = {http://digitallibrary.un.org/record/364050}, title = {Recommended methods for testing opium, morphine and heroin : manual for use by national drug testing laboratories /}, publisher = {UN,}, recid = {364050}, pages = {71 p. :}, address = {New York :. 1998}, year = {1998}, }