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 table_16907214_1 ( paperback VARCHAR, title VARCHAR )

### Question ###
What is the ISBN of 'Dead as a Doornail?

### Accurate SQL ###

SELECT paperback FROM table_16907214_1 WHERE title = "Dead as a Doornail"