Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE book ( book_id number, title text, issues number, writer text )
TABLE: CREATE TABLE publication ( publication_id number, book_id number, publisher text, publication_date text, price number )

### Question ###
Show publishers that have more than one publication.

### Accurate SQL ###

SELECT publisher FROM publication GROUP BY publisher HAVING COUNT(*) > 1