Rock, John Rock(noun)
United States gynecologist and devout Catholic who conducted the first clinical trials of the oral contraceptive pill (1890-1984)
John Rock 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".
The numerical value of john rock in Chaldean Numerology is: 5
The numerical value of john rock in Pythagorean Numerology is: 4
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