02a0032060;¥61.57;20011205d1999 ekmy0engy01;eng;a z 000yy;r;How to build a model illustrating sea-floor spreading and subduction;John C. Lahr;Denver, CO;U.S. Geological Survey;1999;16 p.;ill;Open File Report;U.S. Geological Survey;99-132;如何建造一个能说明海底扩张和消亡的模型;Sea floor ; Spread ; Subduction;Model ; Model ; Model;a626:242.1;Lahr;John C.;101;EB00060709;626:242.1;L13;r¥61.57;a07;b1