OSHERSON, DANIEL N. — Logical abilities in children.

Potomac, Md., Hillsdale, New Jersey : L. Erlbaum Associates 1974 - 1975. 3 volumes (of 4) x,162 pp.; x,(2),178 pp. & xii,(2),272 pp.; 24 cm. Text in English. - (library labels on spine, stamps, some underl. in pencil, worn but still acceptable) ¶ Contents: v. 1. Organization of length and class concepts: empirical consequences of a Piagetian formalism.--v. 2. Logical inference: underlying operations.--v. 3. Reasoning in adolescence: deductive inference.