On today's episode we learn about the common site numbering system in the United States - the Smithsonian Trinomial. It's not used everywhere, but, it IS used most places. Where it's not used, a similar variation is usually in place.
On today's episode we learn about the common site numbering system in the United States - the Smithsonian Trinomial. It's not used everywhere, but, it IS used most places. Where it's not used, a similar variation is usually in place.