| Odyssey Oil City |
0163-0946 2 years |
Official
Gazette of the US Patents & Trademark Office Oil City |
0098-1133 2 years |
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| Oil and
Gas Journal Oil City |
0030-1388 2 years (Last Issue June 1998) |
Old House
Journal Brookville Oil City |
0094-0178 5 years 2 years |
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| Old News Rimersburg |
0276-3338 July 1998 - Present |
On Magazine Clarion Cooperstown |
1532-4090 1 year new 2000 |
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| Oprah Oil City |
1531-3247 2 years |
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| Organic
Gardening Clarion Franklin Knox New Bethlehem Oil City |
0897-3792 2 years 3 years 2 years 2 years 5 years |
Outdoor
Life Brockway Brookville Clarion Cooperstown Franklin New Bethlehem Oil City Punxsutawney Summerville Sykesville |
0030-7076 3 years 5 years 2 years 2 years 3 years 2 years 5 years 3 years 2 years 1 year |
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| Outside New Bethlehem Oil City |
0278-1433 1996 Aug. 1999 - Present |
Owl Oil City |
0382-6627 2 years |
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