Query to get Full Back Orders

Fully Back orders Query:
-----------------------------------
SELECT *
FROM     oe_order_headers_all oh
       , wsh_delivery_details wd
       ,oe_order_lines_all ool
WHERE
       oh.header_id = wd.source_header_id
AND    wd.released_status = 'B'
and    ool.HEADER_ID=oh.header_id
AND    NOT EXISTS (
                      SELECT 1
                      FROM  wsh_delivery_details wd1
                      WHERE wd1.released_status! = 'B'
                      AND   wd1.source_header_id = oh.header_id
                   )