| http://www.w3.org/ns/prov#value | - To obtain golf balls according to the invention using the various types of cores described above, use may be made of a method in which a cover having a plurality of layers is formed, such as a method in which a single-layer core or multi-layer core of two or more layers that has been prefabricated according to the type of ball to be manufactured is placed in a mold and the material of the inventio
|
