539 is used for this purpose

来源: mytwocents 于 2006-01-09 07:43:51 [] [旧帖] [给我悄悄话] 阅读数 : (73 bytes)
回答: File 539. 由 mytwocents 于 2006-01-09 07:12:08

check out http://uscis.gov/graphics/howdoi/nonimmstat.htm
F is there.

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