https://geoscan.nrcan.gc.ca/starweb/nrcanphoto/servlet.starweb?path=nrcanphoto/nrcanphotofastlink_f.web&search1=R=56420
Natural Resources Canada, 2002
Long, Darrel G. F., Graded foresets in medium to coarse grained sandstone, with secondary modification of bedding surfaces by stylolites in atypical,...
Photographie