Top N Results From Aggregate Values in A Select

HI everyone, I think this should be easy - my reference book seems to be discussing using ranking functions to be able to obtain the top N results. I'm not sure if that applies here as I haven't done this in Oracle before. As an example, consider the following statement. It returns about 150+ rows. I would like the top 10 "Space owners" with the most requests:

SELECT
count(*) "Request",
cn_Name "Space Owner"
FROM
tma.f_workorder, tma.f_clients
WHERE
wo_type_code IN ('1', 'A')
wo_cn_fk = cn_pk(+)
GROUP BY
cn_name

Thanks very much for any help on this!

-- 
Tim    http://www.ucs.mun.ca/~tmarshal/
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