Librería Samer Atenea
Librería Aciertas (Toledo)
Kálamo Books
Librería Perelló (Valencia)
Librería Elías (Asturias)
Donde los libros
Librería Kolima (Madrid)
Librería Proteo (Málaga)
Data base and analysis for animal improvement, assisting selection programmes in beef and dairy cattle, so that economically important traits can be improved with each generation, with better average performances for traits such as age at first calving, calving interval, reproductive efficiency, and milk production. Such data analysis can better guide selection criteria.