1. The Chemistry of the Pill
2. Chemical birth of the pill
3. Anonymous.The “Marker Degradation” and Creation of the Mexican Steroid Hormone Industry, 1938–1945; An International Historic Chemical Landmark, University Park, Pennsylvania, October 1, 1999, and Mexico City, December 2, 1999;American Chemical SocietyandSociedad Quimica De Mexico: 1999.