Losada H, Bennett R, Cortes J, Vieyra J, Arias L, Soriano R and Avaleta Z 1998:
The production of milk from dairy herds in the suburban conditions of Mexico City: II. The case of the Region of Xochimilco in the South-East of the City.
Livestock Research for Rural Development. Volume 10, Article #16.
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, from http://www.lrrd.org/lrrd10/2/tito102.htm