Matches in DBpedia 2014 for { ?s ?p John Rock (March 24, 1890 – December 4, 1984) was an American obstetrician and gynecologist. He is best known for the major role he played in the development of the first hormonal contraceptive, colloquially called "the pill".. }
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- John_Rock_(American_scientist) abstract "John Rock (March 24, 1890 – December 4, 1984) was an American obstetrician and gynecologist. He is best known for the major role he played in the development of the first hormonal contraceptive, colloquially called "the pill".".
- John_Rock_(American_scientist) comment "John Rock (March 24, 1890 – December 4, 1984) was an American obstetrician and gynecologist. He is best known for the major role he played in the development of the first hormonal contraceptive, colloquially called "the pill".".