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

Crossword clues for Alaskan river:

HULAHULA: Winding Alaskan river with a Hawaiian name
YUKON: Alaskan river
NOATAK: Alaskan river, 290 mi. to Kotzebue Sound.
TANANA: Alaskan river.
TANANA: Alaskan river or Angels' pitcher
YUKONGOHOMEAGAIN: Request to an Alaskan river to return to its headwaters?