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_name_15 ( totals_06_10 INTEGER, pubs_2010 VARCHAR, totals_07_11 VARCHAR )

### Question ###
What is the lowest 06-10 totals with a pubs 2010 of 68 and a 07-11 totals larger than 305?

### Accurate SQL ###

SELECT MIN(totals_06_10) FROM table_name_15 WHERE pubs_2010 = 68 AND totals_07_11 > 305