Free with trial Liege - decortication. a process involving removal of the surface layer vintage engraved illustration. Trousset encyclopedia 1886 - 1891. Decortication vectors Liege - decortication. vintage engraving. Liege - decortication. a process involving removal of the surface layer vintage engraved illustration. Trousset. Liege - decortication. a process involving removal of the surface layer vintage engraved illustration. Trousset encyclopedia 1886 - 1891