1.
図書 |
di J.E. Wessely ; interamente rifatta da G. Rigutini e G. Payn = by J.E. Wessely ; thoroughly revised and rewritten by G. Rigutini and G. Payn
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2.
図書 |
by J.E. Wessely ; rev. by C. Stoffel and G. Payn ; assisted by Georg Berlit
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