DescriptionStandpiano(inside).jpg 中文(臺灣):直立鋼琴內部 Date 11 December 2006 Source https://zh.wikipedia.org/wiki/File:Stand_piano%28inside%29.jpg Author Lauhenry
by J.D. Griggs, US Geological
Survey. From http://volcanoes.usgs.gov/Imgs/Jpg/MaunaLoa/16112441_061_caption.html
Most recent edit to this work: 02 June