A complete view of the British customs : containing the rates of merchandize with the total net duties to be paid ... : likewise, great variety of forms of the computation of duties ... : to which is added the ports, members, and creeks of Great Britain ... the whole continu'd to the end of the session of Parliament, anno nono Georgii : to which is now added a supplement ... to the end of the session of Parliament, anno undecimo Georgii /