Presents a version of the periodic chart in which the elements are placed in concentric circles and lobes based on the modern knowledge of nuclear and atomic structural relationships. (MLH)

Lists the 100 most frequently prescribed drugs, providing in tabular form the trade and generic name, and a brief introduction to the nature of each drug. (MLH)

Provides a definition of vergence in terms of the curvature of the wave fronts, and gives examples to illustrate the advantages of this approach. The vergence treatment of geometrical optics provides both conceptual and algebraic advantages, particularly for the life science student, over the traditional object distance-image distance-focal length…

Describes various threats to the stability of the ozone layer of the atmosphere, including freons emitted from aerosol cans, combustion products from jet aircraft engines, and nuclear explosions in the atmosphere. (MLH)

Describes a biochemical concept called Mitchell's chemiosmotic hypothesis, which proposes a system that catalyzes the hydrolysis of ATP to ADP and inorganic phosphate. The system is reversible and causes a translocation of protons across a physiological membrane. (MLH)

Provides much background information on transportation problems and issues, and presents the policy decisions made by the U.S. Department of Transportation which developed its policies within the realm of complex economic and political considerations. (BR)

Reflects on energy initiatives of both the executive and legislative branches. Suggests some actions to achieve energy independence. (GS)

Describes an experimental approach for controlling fusion that involves a toroidal device that holds and heats reactive isotopes of hydrogen with a magnetic field. (GS)

Examines reasons for the declining use of cassette film loops in British classrooms in recent years. (JR)

An interview with Howard E. Smith, Jr., who edits science and junior books at McGraw-Hill, and with Thomas G. Aylesworth, who edits books for young readers at Doubleday. They discuss the selection of authors and subjects for books; science fiction and biography; characteristics of good science books; and foreign books. (LS)

A brief description of the activities of the American Association for the Advancement of Science (AAAS) in the area of science for children, followed by a discussion of the criteria used in reviewing children's books in "Science Books." (LS)

A list of reasons for which young adults (junior high through college undergraduates) come to the library for science materials, and ways in which the librarian may both help them and keep up a good current collection of science materials. (LS)