What is the difference between g-325 and g-325a?

Before the advent of printed forms, the G-325 was issued in carbon packs. The only difference between the G-325 and the G-325A form was that the G-325 was a two page package and the G-325A had four pages. Both forms have now been revised to just one page -- in other Words, other than the "A" notation, there is no difference between the forms and they are interchangeable. In other Words, though they may be the same now, just fill out the one that is required of you.