- Amish child's hands1
- Ample Evidence for Taking the Lead Out of Gasoline1
- An Ache to Learn1
- An Act to Amend the Public Health Service Act a to Assist in Combating Heart Disease, Cancer, Stroke, and Related Diseases [Public Law 89-239, 89th Congress, S.596]1
- An Act to provide for the establishment of a National Council on the Arts to Assist in the growth and development of the arts in the United States [Public Law 88-579][HR 9856]1
- An Affirmation1
- An Agenda for Public Health: Presented to the American Public Health Association, Boston, Massachusetts1
- An Agenda for Public Health: Presented to the American Public Health Association, Boston, Massachusetts [Reminiscence]1
- An Alabama Student1
- An Algal Regenerative System for Single-Family Farms and Villages1
- An Analysis of the History of Infectious Nucleic Acids1
- An Appeal by American Scientists to the Governments and People of the World1
- An Appraisal of POSTS as an Interdisciplinary Effort1
- An Approach to Developmental Biology1
- An Artificial Intelligence Directed Analysis of Regional Survey Data in Archaeology1
- An Asteroid Into the Sun May Have Glazed Moon Rock1
- An Atlas of the Medulla and Midbrain [Introductory Material]1
- An Automatically Controlled, Inexpensive Pump-Oxygenator1
- An Early Skirmish in the Global War Against Disease1
- An Enzymatic Mechanism for Linking Amino Acids to RNA1