Lammer, A. . Avicenna Latinus, Liber Primus Naturalium: Tractatus Tertius De His Quae Habent Naturalia Ex Hoc Quod Habent Quantitatem, Edited by Jules Janssens. Brussels, Académie Royale De Belgique, 2017, Vi + 22* + 161 pp., ISBN: 9782803106189. Cloth €84. REFIME 2020, 26, 187-191.