The nature and conditions of learning / by Howard L. Kingsley. Kingsley, Howard L., 1892-1948. Learning, Psychology of. LB1051 .K58 370.15 KIN "References" at end of each chapter. New York : Prentice-Hall, 1946. 1946. 1946 Text xvi, 579 p. : eng Prentice-Hall psychology series Prentice-Hall psychology series.