Ground covering element having raised portions at the useful side which are separated from one another by dummy gaps, a ground covering element group of such ground covering elements, and a method of producing such ground covering elements
Ground covering element having raised portions at the useful side which are separated from one another by dummy gaps, a ground covering element group of such ground covering elements, and a method of producing such ground covering elements
Metodo genetico aplicado a porcinos para producir: progenitores terminales, efectuar cambios en la frecuencia de un alelo, y producir descendientes para reposicion