Greek philosophy a collection of texts

Greek philosophy a collection of texts / selected and supplied with some notes and explanations by C.J. de Vogel . - Leiden : E.J. Brill, 1950- . - 3 v. 25 cm.
V. 1. Thales to Plato
V. 2. Aristotle, the early Peripatetic school and the early Academy
V. 3. The Hellenistic-Roman period.