Astoria-Megler Bridge a steel cantilever through truss bridge spanning the Colubia River from Astoria Oregon to Washington State ,站酷海洛,一站式正版视觉内容平台,站酷旗下品牌.授权内容包含正版商业图片、艺术插画、矢量、视频、音乐素材、字体等,已先后为阿里
A reevaluation of Proneotherium repenningi from the Miocene Astoria Formation of Oregon and its position as a basal odobenid (Pinnipedia: Mammalia) . J. Vert. Paleontol. 21 : 279 – 310 .Deme´re´, T. A., and A. Berta. 2001. A reevaluation of Proneotherium repen- ning...