Columbia subject headings:
Gynecologists--United States--Biography.
Medical research personnel--United States--Biography.
Oral contraceptives--Religious aspects--Catholic Church.
Oral contraceptives--United States--History.
Rock, John, 1890-1984.
Harvard subject headings:
Gynecologists--United States--Biography.
Medical research personnel--United States--Biography.
Medicine--United States--Research personnel--Biography.
Oral contraceptives--Religious aspects--Catholic Church
Oral contraceptives--United States--History.
Rock, John, 1890-1984.
Rock, John.
Princeton subject headings:
Gynecologists--United States--Biography.
Medical research personnel--United States--Biography.
Oral contraceptives--Religious aspects--Catholic Church.
Oral contraceptives--United States--History.
Rock, John, 1890-1984.