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

Crossword clues for Scientist: Abbr.:

ASTR: Scientist: Abbr.
ASTRS: Certain scientists: Abbr.
GEOLS: Earth scientists: Abbr.
ENGR: Rocket scientist, e.g.: Abbr.
ETAL: Abbr. following the names of many scientists?