Descripción
Sumario:Based on a conference at the University of Minnesota, Jan. 29-30, 1960.
Notas:"Based on a conference at the University of Minnesota, January 29-30, 1960."
Descripción Física:1 online resource (x, 166 pages) : portrait
Bibliografía:Includes bibliographical references.
ISBN:9780816661961
0816661960
0816602468
9780816602469
0816657351
9780816657353