1. Use of the sex-linked barring (B) gene for chick sexing on an eumelanotic columbian background;Campo;Poult. Sci.,1991
2. Campo J. L. Conservation and genetical study of Spanish chicken breeds Proc. 6th World Congr. Genet. Appl. Livestock Prod., Armidale, Australia. Univ. New England, Armidale, New South Wales, Australia 1998 155 158
3. Segregation of hypostatic plumage colour genes in five strains of White Leghorn;Campo,2000
4. El programa de conservación de las razas españolas de gallinas;Campo,2002
5. Campo J. L. Jurado J. J. Evaluation of multiple trait selection in strains of layers Proc. 2nd World Congr. Genet. Appl. Livest. Prod., Madrid, Spain. Editorial Garsi, Madrid, Spain 1982 869 874