Mantecón, A. R., Estación Agrícola Experimental (CSIC). León, Spain

• Spanish Journal of Agricultural Research Vol. 2 No. 1 (2004) - Invisible
  Effect of the administration of quebracho extract on rumen fermentation and diet digestibility in sheep
  Abstract  PDF
• Spanish Journal of Agricultural Research Vol. 2 No. 2 (2004) - Invisible
  Review. Tannins and ruminant nutrition
  Abstract  PDF