M2M Relational Query Help Needed

[remnant]

I have 3 tables, below are a list of the significant fields in each.

Stories

1. story_id

2. story_date

Editions

1. edition_id

2. publication_id

Story_Edition_Jct

1. story_id

2. edition_id

What I need to do is create a list of all the stories that are newer than 30 days and have not been assigned to a given publication_id, but may or may not have been assigned an edition.

Just to clear that up some more, a publication consists of many editions, so we're looking for stories that may have been published in other publications, but want to restrict them from being republished in a given publication.

The following query is what I've come up with:

SELECT * FROM stories,
                      editions,
                      story_edition_jct
         WHERE stories.story_id = story_edition_jct.story_id AND
                   editions.edition_id = story_edition_jct.edition_id AND
                   editions.publication_id != $pubID AND
                   DATE_SUB(CURDATE(),INTERVAL 30 DAY) <= stories.story_date;

That query works, but because only stories that have already been assigned to an edition have records in STORY_EDITION_JCT table, I can't find all the stories that are newer than 30 days but NOT assigned to an edition. I think there may be a way to do this with a left join, but i'm not really that familar.

If it helps to know, I'm using MySQL 3.23

Any help would be greatly appreciated.
Thanks in advance!