title: Age-determined changes in the morphological characteristics of the northern populations of Coregonus nasus.
mesh_terms: D000375:Aging; D000818:Animals; D001110:Arctic Regions; D001699:Biometry; D004463:Ecology; D012487:Salmonidae / Q000033:anatomy & histology* / Q000502:physiology; D013045:Species Specificity; D014586:USSR