<span>The book ''Understanding Cloning'' is no longer useful for a research project about cloning <span>conducted in the year 2011 because it was published in the same year and nowadays it can't help any writers as reliable source of information due to the fact that the information is already outdated. The theme of cloning has rapidly-changed character, so you need to find needed information in the most current sources and put off the oldest ones.</span></span>
