Powell, W Supercooling and the low-temperature survival of the green spruce aphid Elatobium abietinum. [electronic resource] - The Annals of applied biology Sep 1974 - 27-37 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 0003-4746 Standard No.: 10.1111/j.1744-7348.1974.tb01482.x doi Subjects--Topical Terms: AnimalsAphids--physiologyCold TemperatureFeeding BehaviorFreezingIceNymph--physiologyPicea--physiologySeasons