1. 1. ABDULLA,A. - 1953 - Cannabis indica aIs Volkssenche ín Aegypten. Schweiz. Med. Wschr. 83: 541-543. .
2. 2. ADAMS,E. N. - Drug addiction. Londres, Oxford, Med. Publ., 1937. 173 p.
3. 3. ADAMS.R. - 1940 - Marihuana. Science 92: 115-119.
4. 4. ALLPORT, N. L. - The chemistry and pharmacy of vegetable drugs. New York, Brooklin, Chem. Publ. Co. Inc., 1944. 252 p. (Cf. p. 133).
5. 5. ANSLINGER, H. J. - Criminal and psychiatric aspects associated wíth marihuana. Evanston, Ill., The Signal Press. 4 p.