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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for One of the sciences: Abbr. 4 letters:

GEOL: One of the sciences: Abbr.
ECOL: One of the life sciences: Abbr.
GEOL: One of the earth sciences: Abbr.
ASTR: One of the hard sciences: Abbr.