2011-03-252011-03-254-9-99 17:1999https://hdl.handle.net/1911/58439The origin of the image is Foreign. Watermark Unknown.DrawingengForeignEscher Art Exhibit, The world of M.C. Escherescherexhibitiona99bescherexhibitiona99b荷兰艺术大师；埃舍尔作品展； [Escher Art Exhibit]ExhibitionEntertainment and TourismEscher Art Exhibitnewspapers [报纸]