003460000a22001210004500060000800000082001500008100001900023245006800042260003300110260000900143300000800152650006400160  a100  a910.02 THO  aThornton, John  aElementary physiography: an introduction to the study of nature  aLondon, Longmans, green & co  c1917  a429  aElementary physiography/study of nature/nature-physiography