Transact SQL help needed

the goal is to get items with average lead time > 100 days.

i can run this and get desired results:

SELECT     ITEMNMBR, VENDORID, AVRGLDTM / 100 AS Expr1

FROM         IV00103

WHERE     (AVRGLDTM > 10000)

ORDER BY AVRGLDTM DESC

i need to add in two extra columns from different tables (buyerid from table iv00102 and ABC code from table iv00101), so far im at:

SELECT     dbo.IV00103.ITEMNMBR, dbo.IV00103.VENDORID, dbo.IV00103.AVRGLDTM / 100 AS Expr1, dbo.IV00102.BUYERID,
                      dbo.IV00101.ABCCODE
FROM         dbo.IV00103 INNER JOIN
                      dbo.IV00101 ON dbo.IV00103.ITEMNMBR = dbo.IV00101.ITEMNMBR INNER JOIN
                      dbo.IV00102 ON dbo.IV00103.ITEMNMBR = dbo.IV00102.ITEMNMBR
WHERE     (dbo.IV00103.AVRGLDTM > 10000)
ORDER BY dbo.IV00103.AVRGLDTM DESC

this results in multiple lines with the same information, for example an item number might appear 3 times in the results. what am i doing wrong?