join a lot of columns of two tables

Dear Postgres Users,
I have 2 tables...
each one has a column called ID (primary keys of each table)
the values into each ID column are exactly the same.

each table has a lot of other columns (around 50 for each table)....

I would like to create a table containing the ID (only one column
obviously) and all the other columns of both tables...

a simple equi join for each column is simple but how can I join
completely the two table on the bases of the column ID???

probably it is a simple question but I don't know how to solve this very
simple problem quikly... :-(
thanks

Ivan

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Ivan Marchesini
Department of Civil and Environmental Engineering
University of Perugia
Via G. Duranti 93/a
06125
Perugia (Italy)
e-mail: marchesini(at)unipg(dot)it
ivan(dot)marchesini(at)gmail(dot)com
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