New York: Herder and Herder, 1970.
First American edition. 186 pp. Bound in white cloth with black lettering on spine. Very Good with light wear at spine ends; slight dust soiling and foxing to top edge. Marginal brackets and underlining in pen throughout. In a Very Good+ unclipped dust jacket with small edge tears, slight toning to spine and small stain to front cover. The first appearance in the English language of a modern classic of pedagogical theory. Item #140945971