M.C. Chang's cobtributions to the development of Oral Contraceptive changed the world. He and his co-Developer Gregory Pincus and others can arguably be said to have made the Women's Liberation movement of the 1970's and the accomplishments of women in many areas happen faster than if the "pill" did not exist.
Check our rare offprint selection for M.C.Chang, Gregory Pincus and other reproduction reaearchers mostly from Robert Foote's (Cornell researcher) working library
