Subject retrieval in the seventies : new directions : proceedings of an international symposium held at the Center of Adult Education, University of Maryland, College Park, May 14 to 15, 1971 /
Wellisch, Hans H.
Wilson, Thomas D.(Thomas Daniel),1935-
University of Maryland, College Park.School of Library and Information Services.
Westport, Conn Greenwood in conjunction with the School of Library and Information Services, University of Maryland
1972
Classification
Information storage and retrieval systems