Found Roleplayer #16 (October 1989)'s
Spell Dependency Charts.
Given that GURPS went from 1st to 3rd in the space of two years (1986-1988) and the Grimore didn't appear until 1994 unless there were major changes from Fantasy 1e (1986) to Magic 1e for GURPS 3e (1989) we should be able to use that.
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