Illustration from the article "gascon cattle breed with black mucous membranes", h. De lapparent, journal of practical agriculture, gardening and domestic economics, paris, librairie agricole de la maison rustic, 1916, p. 52-54. The colored plate represents a gascon bull with black mucous membranes having won 1st prize in the general competition for breeding animals in paris in 1913. Work belonging to the historical library of the ministry of agriculture, deposited at the mrsh caen. File: unicaen_b_141182210_jap_1916_52_01.
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