User:J.R.Cartier/sandbox
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- ^ Egerton, F. 2003. A History of the Ecological Sciences, Part 8: Fredrick II of Hohenstaufen: Amateur Avian Ecologist and Behaviorist. Bulletin of the Ecological Society of America. 84(1):40–44. [1]
- ^ Haskins, C.H., The 'De Arte Venandi cum Avibus' of the Emperor Frederik II, The English Historical Review. Vol 36, No143 (Jul. 1921), pp. 334 - 355.
- ^ Vatican, MS. Pal. Lat. 1071. Parchment, 111 folios, 360 x 250 mm.
- ^ Paris, Bibliothèque Mazarine, MS. 3716 Parchment, 589 pages