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Titles
- Panspermia Revisited, or Have We Already Contaminated Mars?1
- Paradox in U. S. Food Policy1
- Paris Green in the Eradication of Anopheles Gambiae: Brazil, 1940; Egypt, 19451
- Pathogenesis of Organic Changes in Chronic Hypertension and Hemodynamic Effects of Antihypertensive Agents1
- Patterns of Sexual Recombination in Enteric Bacteria1
- Pauling's $1 Million Libel Bid Tossed Out1
- Personal Tolerance Futile Amid Institutional Racism1
- Personalities in Modern Science: Edward Lawrie Tatum1
- Pill Heralds Biological Change1
- Poets Knew it All Along1
- Premises for Council for a Livable World1
- President's transmittal letter to the Congress for report on Regional Medical Programs1
- Problems of Materials in Mechanical Heart Systems1
- Problems to be Solved if the Eradication of Tuberculosis is to be Realized1
- Prolonged Assisted Circulation During and After Heart or Aortic Surgery1
- Prolonged Partial Left Ventricular Bypass by Means of an Intrathoracic Pump Implanted in the Left Chest1
- Prolonged Ventricular Bypass with Intrathoracic Pumps1
- Psychological Aspects of American Foreign Policy1
- Psychology of Differences Between Sexes Still Obscure1
- Public Finds Conflicts in Fluoridation Vote1