1. FranciscaE. Arana, 1940 . Chemistry of vanilla. Puerto Rico Agr. Expt. Sta. Rpt., 1939,2 -14 .
2. Association of Official Agricultural Chemists , 1940 . Official and Tentative Methods of Analysis. Fifth ed., 320 , 320 -499 . Washington, D. C.
3. The Curing of Vanilla
4. A. K. Balls, E. AranaFrancisca, G. KevorkianArthur, and E. AranaFrancisca, 1942 . Process for curing vanilla bean's. U. S. Patent No. 2,274,120, Feb. 24, 1942.