Freeman, K. (1962). Ancilla to the pre-Socratic philosophers. Basil Blackwell.
Chicago-čujuhus (17. p.)Freeman, Kathleen. Ancilla to the Pre-Socratic Philosophers. Oxford: Basil Blackwell, 1962.
MLA-čujuhus (9. p.)Freeman, Kathleen. Ancilla to the Pre-Socratic Philosophers. Basil Blackwell, 1962.
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