Ruiz Mantecón, A., CSIC. León, Spain

• Spanish Journal of Agricultural Research Vol. 2 No. 4 (2004) - Invisible
  Classification variables of cattle farms in the mountains of León, Spain
  Abstract  PDF
• Spanish Journal of Agricultural Research Vol. 2 No. 4 (2004) - Invisible
  The identification of homogeneous groups of cattle farms in the mountains of León, Spain
  Abstract  PDF