Charles W. Ryan

Differential Impacts of a Computer Information System on Selected Human Service Agencies.

Charles W. Ryan, Robert J. Drummond, 1981 .

A New Guidance Delivery System.

Charles W. Ryan, John C. Dagley, 1974 .

Chemistry of Cephalosporin Antibiotics. II. Preparation of a New Class of Antibiotics and the Relation of Structure to Activity

Richard A. Mueller, Charles W. Ryan, R. Mueller, 1962 .