Well, read on. There are some things about pugs that aren't in all the books and that may make a pug a bad fit for you. Let me preface this by saying that no two pugs are alike. Don't assume that because your neighbour's pug is a slug that yours will be. It's a HUGE mistake to judge all pugs by your experience with one or two.
A NLPG Unique Property Reference Number (UPRN) is an attribute of a Basic Land and Property Unit (BLPU).It is a unique reference number that links together information and is used to cross-reference associated data to.PRNs are integers (numbers) that can be up to 12 digits in length; they can therefore be less than 12 digits long and do not require leading zeros. However some gazetteer database applications will pad UPRNs that are less than 12 digits with zeros.
A CAS Registry Number is a numeric identifier that can contain up to 10 digits, divided by hyphens into three parts. The right-most digit is a check digit used to verify the validity and uniqueness of the entire number. For example, 58-08-2 is the CAS Registry Number for caffeine. A CAS Registry Number is assigned to a substance when it enters the CAS REGISTRY database. Numbers are assigned in sequential order to unique, new substances identified by CAS scientists for inclusion in the database.